Chartered Accountants
International Tax

Many accountants claim to be “expert” in your business or tax affairs but PetersonSims are a company that truly offers you something different

PetersonSims started as a small accountancy practice serving niche private businesses in the UK.  It has grown into an international company offering business and personal tax advice and support for individuals and large corporations across the globe.  As well as their own team of in-house professionals they work with international experts across the world to ensure they offer their clients a truly global service.

Our Tax Director, Oliver, comes from a Big 4 background and he trained and worked for one of the largest global accountancy firms. The team now offer our clients their experience of over forty years specialising in international personal tax. PetersonSims offers clients a level of expertise in expatriate taxation normally only found in the Big 4 accountancy firms, but at realistic fee levels. Coupled with this in-house expertise, we have a network of trusted associate firms in key overseas locations who provide expert local advice.

Gerry is a Chartered Accountant with years in practice and in industry; at the sharp end during a recession when many businesses were taking a hit.  He went on to launch and run a £1m+ business in a non-finance sector. This is an accountant you can talk to.  Businesses large and small can benefit from his real-life experience as he has been there and done it, through good times and bad.

We know all businesses and individuals need to control their costs so we always offer our clients a fixed quote when we are engaged to work; there are no nasty surprises.


Expatriate Tax Chartered Accountant

We specialise in advising those working or retiring abroad, or those living outside the UK but still involved in …


Non Resident UK Director

If you are resident outside the UK but managing your own UK based company then particular attention…


Uk and International Property

UK and expatriate landlords, wherever their properties are sited, can be assured of expert advice and support…


PetersonSims Chartered Accountants

Gerry Sims FCA has over 30 years’ experience including as a director in multi-million turnover small companies…

PetersonSims – Global Accountants

We have considerable experience of advising clients on tax issues in most of Europe and locations beyond, and we have an established a network of global associate tax and accounting firms in various countries around the world.

Latest News

  • Paulette Peterson ATT (Fellow)

Paulette Peterson Retires

February 19th, 2021|

Paulette Peterson Retires Paulette Peterson - ATT (Fellow) PetersonSims have had a very successful end of UK tax season, in which our team successfully filed all of our 2019/20 returns on time,  even [...]

Real Support. Real People.

Our business services are very IT focused using the latest in cloud and online technologies. Our approach is holistic so we work with you to look beyond the numbers to maximise your personal goals.