Preserving Wealth
Across Generations
Specialist tax advisory, accountancy and HMRC investigation defence for businesses, international families and private capital — trusted since 1987.
HMRC Defence
COP 8, COP 9, criminal investigations
Tax Advisory
International planning & structuring
Private Clients
Trusts, estates, family wealth
Trusted by Clients Worldwide
Four decades of protecting wealth, defending rights, and securing legacies. Trusted by entrepreneurs, wealthy families, and individuals across the UK.
Years of Excellence
Established 1987
Assets Protected
Client portfolios
Specialists & Advisors
Dedicated team
Client Retention
Trust & results
Comprehensive Tax
& Advisory Services
From accounting and tax compliance to HMRC investigation defence, non-dom advisory, and family office services — we provide elite professional services for discerning clients worldwide.
ACCOUNTING & TAX COMPLIANCE
HMRC ENQUIRIES
NON-DOMICILED & LTR STATUS
Why Clients Choose
Parousia
A boutique practice built on expertise, discretion and lasting relationships — not volume. Here is what sets us apart.
38 Years of Heritage
Established in 1987. Nearly four decades advising businesses, families and private clients through every change in UK tax law — continuity you can rely on across generations.
Specialist Tax Expertise
Beyond routine compliance: COP 8 and COP 9 defence, non-domicile and residence planning, inheritance tax, capital gains and complex international structures — advice most high-street firms cannot offer.
Partner-Led Service
You work directly with a senior adviser from the first meeting to resolution. Your matter is never handed down to junior staff — the person you meet is the person who handles your affairs.
HMRC Investigation Experience
Involvement in over 150 HMRC enquiries, with strategic partnerships with leading criminal defence firms for the rare occasions when a matter escalates.
Long-Term Relationships
A 99.5% client retention rate. Many of our clients have trusted us for decades — across the growth of their businesses and the succession of their family wealth.
Results, Not Claims
Anonymised examples of matters we have brought to a conclusion — from a multi-million pound HMRC valuation dispute to a COP 9 investigation settled without criminal proceedings.
Client identities and identifying details have been withheld. Every matter turns on its own facts and the outcomes described are not a guarantee or prediction of the result of any other engagement.