Diana Ngiam

Diana Ngiam is a legal practitioner in Singapore. With documented cases from 2012 to 2021. The lawyer has handled 16 cases in Singapore's courts. Associated with 3 law firms. The lawyer demonstrates particular expertise in criminal law and criminal procedure. Their track record shows a 13.0% success rate in resolved cases.

Areas of Practice and Expertise

Diana Ngiam has demonstrated expertise across 42 primary practice areas, with significant experience in criminal law and criminal procedure.

Practice Area	Case Volume	Distribution	Expertise Level	Description
Criminal Law	15 cases	15% of total caseload	Highly Specialized89% relevance score	Diana Ngiam has demonstrated deep specialization and significant involvement in complex mattersin this area, handling 15 cases which represents 15% of their total caseload.
Criminal Procedure	10 cases	10% of total caseload	Highly Specialized75% relevance score	Diana Ngiam has demonstrated deep specialization and significant involvement in complex mattersin this area, handling 10 cases which represents 10% of their total caseload.
Sentencing	9 cases	9% of total caseload	Highly Specialized82% relevance score	Diana Ngiam has demonstrated deep specialization and significant involvement in complex mattersin this area, handling 9 cases which represents 9% of their total caseload.
Offences	5 cases	5% of total caseload	Highly Specialized78% relevance score	Diana Ngiam has demonstrated deep specialization and significant involvement in complex mattersin this area, handling 5 cases which represents 5% of their total caseload.
Culpable Homicide	5 cases	5% of total caseload	Highly Specialized92% relevance score	Diana Ngiam has demonstrated deep specialization and significant involvement in complex mattersin this area, handling 5 cases which represents 5% of their total caseload.
Evidence	4 cases	4% of total caseload	General Practice43% relevance score	Diana Ngiam has demonstrated general practice experiencein this area, handling 4 cases which represents 4% of their total caseload.
Penal Code	4 cases	4% of total caseload	Highly Specialized81% relevance score	Diana Ngiam has demonstrated deep specialization and significant involvement in complex mattersin this area, handling 4 cases which represents 4% of their total caseload.
Sexual Offences	3 cases	3% of total caseload	Highly Specialized90% relevance score	Diana Ngiam has demonstrated deep specialization and significant involvement in complex mattersin this area, handling 3 cases which represents 3% of their total caseload.
Civil Procedure	3 cases	3% of total caseload	General Practice20% relevance score	Diana Ngiam has demonstrated general practice experiencein this area, handling 3 cases which represents 3% of their total caseload.
Diminished Responsibility	3 cases	3% of total caseload	Highly Specialized82% relevance score	Diana Ngiam has demonstrated deep specialization and significant involvement in complex mattersin this area, handling 3 cases which represents 3% of their total caseload.
Domestic Maid Abuse	2 cases	2% of total caseload	Experienced70% relevance score	Diana Ngiam has demonstrated substantial experience and regular engagementin this area, handling 2 cases which represents 2% of their total caseload.
Mentally disordered offenders	2 cases	2% of total caseload	Highly Specialized90% relevance score	Diana Ngiam has demonstrated deep specialization and significant involvement in complex mattersin this area, handling 2 cases which represents 2% of their total caseload.
Misuse of Drugs Act	2 cases	2% of total caseload	Highly Specialized97% relevance score	Diana Ngiam has demonstrated deep specialization and significant involvement in complex mattersin this area, handling 2 cases which represents 2% of their total caseload.
Theft	2 cases	2% of total caseload	Highly Specialized85% relevance score	Diana Ngiam has demonstrated deep specialization and significant involvement in complex mattersin this area, handling 2 cases which represents 2% of their total caseload.
Personal Injury	2 cases	2% of total caseload	General Practice35% relevance score	Diana Ngiam has demonstrated general practice experiencein this area, handling 2 cases which represents 2% of their total caseload.
Administrative Law	2 cases	2% of total caseload	General Practice15% relevance score	Diana Ngiam has demonstrated general practice experiencein this area, handling 2 cases which represents 2% of their total caseload.
Psychiatry	2 cases	2% of total caseload	Experienced55% relevance score	Diana Ngiam has demonstrated substantial experience and regular engagementin this area, handling 2 cases which represents 2% of their total caseload.
Obstructing, preventing, perverting or defeating course of justice	1 cases	1% of total caseload	General Practice10% relevance score	Diana Ngiam has demonstrated general practice experiencein this area, handling 1 cases which represents 1% of their total caseload.
Public Prosecutor	1 cases	1% of total caseload	General Practice10% relevance score	Diana Ngiam has demonstrated general practice experiencein this area, handling 1 cases which represents 1% of their total caseload.
Consent of Public Prosecutor	1 cases	1% of total caseload	General Practice10% relevance score	Diana Ngiam has demonstrated general practice experiencein this area, handling 1 cases which represents 1% of their total caseload.
Private Prosecution	1 cases	1% of total caseload	General Practice5% relevance score	Diana Ngiam has demonstrated general practice experiencein this area, handling 1 cases which represents 1% of their total caseload.
Statutory offence	1 cases	1% of total caseload	Highly Specialized80% relevance score	Diana Ngiam has demonstrated deep specialization and significant involvement in complex mattersin this area, handling 1 cases which represents 1% of their total caseload.
Dishonest Misappropriation	1 cases	1% of total caseload	General Practice30% relevance score	Diana Ngiam has demonstrated general practice experiencein this area, handling 1 cases which represents 1% of their total caseload.
Psychiatric Evidence	1 cases	1% of total caseload	General Practice40% relevance score	Diana Ngiam has demonstrated general practice experiencein this area, handling 1 cases which represents 1% of their total caseload.
Abduction	1 cases	1% of total caseload	Highly Specialized95% relevance score	Diana Ngiam has demonstrated deep specialization and significant involvement in complex mattersin this area, handling 1 cases which represents 1% of their total caseload.
Caregiver Stress	1 cases	1% of total caseload	General Practice40% relevance score	Diana Ngiam has demonstrated general practice experiencein this area, handling 1 cases which represents 1% of their total caseload.
Child Abuse and Neglect	1 cases	1% of total caseload	Experienced70% relevance score	Diana Ngiam has demonstrated substantial experience and regular engagementin this area, handling 1 cases which represents 1% of their total caseload.
Evidence Law	1 cases	1% of total caseload	Experienced60% relevance score	Diana Ngiam has demonstrated substantial experience and regular engagementin this area, handling 1 cases which represents 1% of their total caseload.
Grievous Hurt	1 cases	1% of total caseload	Highly Specialized80% relevance score	Diana Ngiam has demonstrated deep specialization and significant involvement in complex mattersin this area, handling 1 cases which represents 1% of their total caseload.
Prevention of Corruption Act	1 cases	1% of total caseload	Highly Specialized100% relevance score	Diana Ngiam has demonstrated deep specialization and significant involvement in complex mattersin this area, handling 1 cases which represents 1% of their total caseload.
Sentencing Framework	1 cases	1% of total caseload	Highly Specialized85% relevance score	Diana Ngiam has demonstrated deep specialization and significant involvement in complex mattersin this area, handling 1 cases which represents 1% of their total caseload.
Children and Young Persons Act	1 cases	1% of total caseload	Highly Specialized80% relevance score	Diana Ngiam has demonstrated deep specialization and significant involvement in complex mattersin this area, handling 1 cases which represents 1% of their total caseload.
Murder	1 cases	1% of total caseload	General Practice40% relevance score	Diana Ngiam has demonstrated general practice experiencein this area, handling 1 cases which represents 1% of their total caseload.
Intermittent Explosive Disorder	1 cases	1% of total caseload	General Practice10% relevance score	Diana Ngiam has demonstrated general practice experiencein this area, handling 1 cases which represents 1% of their total caseload.
Contract Law	1 cases	1% of total caseload	General Practice30% relevance score	Diana Ngiam has demonstrated general practice experiencein this area, handling 1 cases which represents 1% of their total caseload.
Children's Welfare	1 cases	1% of total caseload	Experienced60% relevance score	Diana Ngiam has demonstrated substantial experience and regular engagementin this area, handling 1 cases which represents 1% of their total caseload.
Company Law	1 cases	1% of total caseload	Experienced60% relevance score	Diana Ngiam has demonstrated substantial experience and regular engagementin this area, handling 1 cases which represents 1% of their total caseload.
Appeal	1 cases	1% of total caseload	Experienced70% relevance score	Diana Ngiam has demonstrated substantial experience and regular engagementin this area, handling 1 cases which represents 1% of their total caseload.
Fraudulent Trading	1 cases	1% of total caseload	Highly Specialized80% relevance score	Diana Ngiam has demonstrated deep specialization and significant involvement in complex mattersin this area, handling 1 cases which represents 1% of their total caseload.
Hurt	1 cases	1% of total caseload	Experienced70% relevance score	Diana Ngiam has demonstrated substantial experience and regular engagementin this area, handling 1 cases which represents 1% of their total caseload.
Rape	1 cases	1% of total caseload	Highly Specialized95% relevance score	Diana Ngiam has demonstrated deep specialization and significant involvement in complex mattersin this area, handling 1 cases which represents 1% of their total caseload.
Voluntarily Causing Hurt	1 cases	1% of total caseload	Experienced70% relevance score	Diana Ngiam has demonstrated substantial experience and regular engagementin this area, handling 1 cases which represents 1% of their total caseload.

Law Firm Affiliations

Diana Ngiam has been affiliated with 3 law firms. The most active affiliation involves 9 cases.

Law Firm	Cases Handled	Workload Share	Recent Cases
Quahe Woo & Palmer LLC	9 cases	56% of cases	PP v Gaiyathiri: Culpable Homicide & Diminished Responsibility in Maid Abuse Case(Aug 2021) Public Prosecutor v Ong Soon Heng: Rape and Abduction Case(Mar 2018) Public Prosecutor v Kong Peng Yee: Culpable Homicide and Sentencing of Mentally Disordered Offender(Oct 2017)
RHTLaw Taylor Wessing LLP	6 cases	38% of cases	Public Prosecutor v Christeen Jayamany & Datchinamurthy Kataiah: Trafficking Diamorphine, Knowledge of Drugs, Courier Exception(May 2015) Lim Ghim Peow v PP: Culpable Homicide & Diminished Responsibility Sentencing(Oct 2014) Geyabalan v Public Prosecutor: Theft Conviction Appeal - Baggage Handlers at Changi Airport(Sep 2014)
Quahe Woo and Palmer LLC	1 cases	6% of cases	Masui v Public Prosecutor: Corruption, Sentencing, and Prevention of Corruption Act(Dec 2020)

Case Complexity Analysis

Analysis of Diana Ngiam's case complexity based on the number of parties involved and case characteristics.

Complexity Overview

Average Parties per Case: 2.2
Complex Cases: 0 (0%); Cases with more than 3 parties

Complexity by Case Type

Type	Cases	Avg Parties	Distribution
Lost	122.1 parties avg	2.1	75%
Partial	22.5 parties avg	2.5	13%
Won	22.5 parties avg	2.5	13%

Complexity Trends Over Time

Year	Cases	Average Parties
2012	12.0 parties avg	2.0
2013	12.0 parties avg	2.0
2014	32.3 parties avg	2.3
2015	22.5 parties avg	2.5
2016	42.0 parties avg	2.0
2017	22.0 parties avg	2.0
2018	12.0 parties avg	2.0
2020	13.0 parties avg	3.0
2021	12.0 parties avg	2.0

Case Outcome Analytics

Analysis of Diana Ngiam's case outcomes, including distribution by type, yearly trends, and monetary outcomes where applicable.

Outcome Distribution

Outcome Type	Cases	Percentage
Lost	12(75%)	75%
Partial	2(13%)	13%
Won	2(13%)	13%

Monetary Outcomes

Currency	Total Amount	Average	Cases
SGD	1,076.00	358.673 cases	3

Yearly Outcome Trends

Year	Total Cases	Outcome Distribution
2012	1 1	Lost: 1 cases (100.0%)
2013	1 1	Won: 1 cases (100.0%)
2014	3 21	Lost: 2 cases (66.7%) Won: 1 cases (33.3%)
2015	2 2	Lost: 2 cases (100.0%)
2016	4 4	Lost: 4 cases (100.0%)
2017	2 11	Lost: 1 cases (50.0%) Partial: 1 cases (50.0%)
2018	1 1	Lost: 1 cases (100.0%)
2020	1 1	Partial: 1 cases (100.0%)
2021	1 1	Lost: 1 cases (100.0%)

Case History

Displaying all 16 cases

No.	Case	Decision Date	Party & Outcome
1	PP v Gaiyathiri: Culpable Homicide & Diminished Responsibility in Maid Abuse Case 03 Aug 2021 Gaiyathiri d/o Murugayan (Defendant)Lost	03 Aug 2021	Gaiyathiri d/o Murugayan (Defendant): Convicted and SentencedAccused was convicted of culpable homicide and other offences and sentenced to 30 years’ imprisonment.
2	Masui v Public Prosecutor: Corruption, Sentencing, and Prevention of Corruption Act 01 Dec 2020 Katsutoshi Ishibe (Appellant, Applicant)Partial	01 Dec 2020	Katsutoshi Ishibe (Appellant, Applicant): Appeal Allowed in PartAppeal against sentence allowed in part. Sentence adjusted.
3	Public Prosecutor v Ong Soon Heng: Rape and Abduction Case 15 Mar 2018 Ong Soon Heng (Defendant)Lost	15 Mar 2018	Ong Soon Heng (Defendant): ConvictedConvicted of rape and abduction and ordered to pay compensation of $76 (assumed SGD, as the judgment originates from Singapore).
4	Public Prosecutor v Kong Peng Yee: Culpable Homicide and Sentencing of Mentally Disordered Offender 15 Oct 2017 Kong Peng Yee (Defendant)Partial	15 Oct 2017	Kong Peng Yee (Defendant): PartialThe accused was convicted of culpable homicide and sentenced to two years’ imprisonment.
5	Public Prosecutor v Razak bin Bashir: Sentencing for Drug Trafficking under the Misuse of Drugs Act 23 Feb 2017 Razak bin Bashir (Defendant)Lost	23 Feb 2017	Razak bin Bashir (Defendant): Aggregate sentence of 22 years and three monthsAccused sentenced to an aggregate sentence of 22 years and three months.
6	PP v Sumanthiran: Culpable Homicide, Grievous Hurt, and Hurt Offences 27 Dec 2016 Sumanthiran s/o Selvarajoo (Defendant)Lost	27 Dec 2016	Sumanthiran s/o Selvarajoo (Defendant): Convicted and SentencedAccused was convicted of four charges and sentenced to 16 years’ imprisonment and 12 strokes of the cane.
7	Public Prosecutor v BDB: Sentencing for Voluntarily Causing Grievous Hurt and Ill-treatment of Child 09 Oct 2016 BDB (Defendant)Lost	09 Oct 2016	BDB (Defendant): ImprisonmentSentenced to a total term of imprisonment of eight years.
8	Public Prosecutor v Chin Swee Chung: Rape Conviction for Non-Consensual Intercourse 07 Sep 2016 Chin Swee Chung (Accused)Lost	07 Sep 2016	Chin Swee Chung (Accused): ConvictionAccused convicted of both charges of rape.
9	Low Gek Hong v Public Prosecutor: Appeal Against Sentence for Abuse of Foreign Domestic Worker 14 Apr 2016 Low Gek Hong (Appellant)Lost	14 Apr 2016	Low Gek Hong (Appellant): Appeal DismissedThe appeal against the sentences imposed by the District Court was dismissed.
10	Public Prosecutor v Chang Kar Meng: Rape and Robbery Sentencing 24 Jun 2015 Chang Kar Meng (Defendant)Lost	24 Jun 2015	Chang Kar Meng (Defendant): Convicted and SentencedSentenced to 12 years’ imprisonment and 12 strokes of the cane for rape, and 5 years’ imprisonment and 12 strokes of the cane for robbery with hurt, to run consecutively.
11	Public Prosecutor v Christeen Jayamany & Datchinamurthy Kataiah: Trafficking Diamorphine, Knowledge of Drugs, Courier Exception 07 May 2015 Christeen d/o Jayamany (Defendant)Lost	07 May 2015	Christeen d/o Jayamany (Defendant): Conviction and sentence to life imprisonmentChristeen was convicted of drug trafficking and sentenced to life imprisonment after the Public Prosecutor certified that she substantively assisted the CNB.
12	Lim Ghim Peow v PP: Culpable Homicide & Diminished Responsibility Sentencing 16 Oct 2014 Lim Ghim Peow (Appellant)Lost	16 Oct 2014	Lim Ghim Peow (Appellant): Appeal DismissedThe appellant's appeal against his sentence of 20 years' imprisonment was dismissed.
13	Geyabalan v Public Prosecutor: Theft Conviction Appeal - Baggage Handlers at Changi Airport 03 Sep 2014 Nagas s/o Arumugam (Appellant)Won	03 Sep 2014	Nagas s/o Arumugam (Appellant): Appeal AllowedAppellant's appeal against conviction and sentence was allowed.
14	PP v Lim Ghim Peow: Culpable Homicide, Major Depressive Disorder & Sentencing Principles 26 Jan 2014 Lim Ghim Peow (Defendant)Lost	26 Jan 2014	Lim Ghim Peow (Defendant): ConvictedThe accused was found guilty of culpable homicide and sentenced to 20 years' imprisonment.
15	Ajmer Singh v Chua Hock Kwee: Voluntarily Causing Hurt & Witness Testimony 10 Mar 2013 Ajmer Singh s/o Ajit Singh (Appellant)Won	10 Mar 2013	Ajmer Singh s/o Ajit Singh (Appellant): Appeal AllowedAppeal against conviction allowed; fine of $1,000 to be refunded (assumed SGD, as the judgment originates from Singapore).
16	Phang Wah v PP: Fraudulent Trading under Companies Act & Public Interest Law 22 Oct 2012 Phang Wah (Appellant)Lost	22 Oct 2012	Phang Wah (Appellant): Reference DismissedThe criminal reference was dismissed as no question of law of public interest arose.