Chartered Tax Adviser  ·  CTA  ·  FATT

Expert Tax
You Can
Trust

Specialist personal taxation services with over 30 years of experience. Self-Assessment, Capital Gains, Inheritance Tax, Trusts — handled with precision and care.

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30+
Years of Experience
In personal & business taxation
CTA
Chartered Tax Adviser
Chartered Institute of Taxation, 1999
FATT
Fellow of the ATT
Association of Taxation Technicians
CIOT Member
Fellow ATT
Based in Ruislip
Former HMRC Officer
Equity Tax Partner (retd.)
What I Do

Areas of Expertise

Comprehensive personal and business tax services, handled with the depth of knowledge that only decades of hands-on experience can deliver.

Self-Assessment

Accurate, timely completion of your Self-Assessment tax returns, ensuring all reliefs are claimed and deadlines are met without penalty.

Capital Gains Tax

Expert advice on CGT arising from property sales, investments and business disposals — including time-sensitive 60-day HMRC reporting for residential property.

Inheritance Tax & Trusts

Strategic planning to protect your estate and minimise IHT liability. Guidance on trust structures and the HMRC Trust Registration Service.

Business Taxation

Tax planning and compliance for business owners and sole traders, covering corporation tax considerations and partnership taxation matters.

PAYE & Employment

Resolving PAYE coding issues, employment income disputes and underpayment notices from HMRC on your behalf.

National Insurance

Advice on NI contributions, voluntary payments, and ensuring your record is correct to maximise your state pension entitlement.

30+ Years in taxation
1999 CTA qualified
Chartered Tax Adviser
Fellow ATT
Former HMRC Officer
Equity Tax Partner
Based in Ruislip
CIOT Member
About Warren

A Career Built on Tax Expertise

Born and raised in Ruislip, Warren began his career by joining HM Revenue & Customs directly from school, spending ten formative years as a Revenue Assistant and Revenue Officer at the Pinner and Ruislip Tax Offices.

In 1996 he joined the tax department of Sproull & Co. at the advent of Self-Assessment, rising from Tax Assistant to Equity Tax Partner by 2010. With qualifications spanning both the ATT and the Chartered Institute of Taxation, Warren brings an unrivalled depth of knowledge to every client engagement.

ATT — Association of Taxation Technicians Qualified May 1997
CTA — Chartered Institute of Taxation Qualified November 1999
Fellow of the ATT (FATT) Awarded May 2013
Former HMRC Revenue Officer 10 years — Pinner & Ruislip Tax Offices

Expert Guidance on Personal Taxation

In addition to all matters relating to Self-Assessment, Warren has extensive experience in the taxation aspects of property sales and the time-sensitive HMRC reporting requirements — as well as advice on setting up and maintaining the HMRC Trust Register.

60-Day Property CGT Reporting
HMRC Trust Register Setup
Estate & Inheritance Planning
PAYE & Coding Disputes
Business & Partnership Tax
National Insurance Advice
Career History

Three Decades of Excellence

A career that spans both the public and private sectors, delivering unparalleled insight into the workings of HMRC and the needs of private clients.

1980s – 1996

HM Revenue & Customs — Revenue Officer

Joined HMRC directly from school. Served for ten years at the Pinner and Ruislip Tax Offices as Revenue Assistant and Revenue Officer, building an inside knowledge of HMRC operations.

March 1996

Sproull & Co. — Tax Assistant

Joined the tax department at the commencement of the Self-Assessment regime, bringing HMRC experience directly into private practice client work.

May 1997

ATT Qualified

Passed the Association of Taxation Technicians examinations, formally establishing his credentials in tax practice.

November 1999

CTA Qualified — Chartered Tax Adviser

Passed the Chartered Institute of Taxation examinations, attaining the gold-standard qualification in UK taxation.

January 2007

Associate Tax Partner

Promoted to Associate Tax Partner at Sproull & Co., recognising his expertise and contribution to the firm's tax practice.

May 2010

Equity Tax Partner

Became an Equity Tax Partner, reflecting full ownership and leadership of the firm's tax department.

May 2013

Fellow of the ATT (FATT)

Awarded Fellowship of the Association of Taxation Technicians — one of the profession's highest distinctions.

Get in Touch

Book a Consultation

Whether you have an immediate tax concern or simply want to explore how Warren can help, get in touch today.

Let's Talk Tax

With over 30 years of experience in UK taxation, Warren offers straightforward, expert advice tailored to your personal circumstances. Based in Ruislip and serving clients across the UK.

Location Ruislip, London, UK
Website warrengellcta.co.uk
Qualifications CTA · FATT · Former HMRC Officer

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