Ruslan Kosarenko Senior PartnerPrincipal Partner – Immigration Adviser OISC Level 3

Ruslan Kosarenko is a principal partner of Sterling & Law Associates LLP.  He advises on all areas of UK immigration and nationality law and is accredited at the highest Level 3 with the Office of Immigration Services Commissioner (OISC)

Ruslan Kosarenko has 11 years of experience in immigration law practice with particular expertise in complex human rights cases, including family reunion and asylum cases at both initial application and appeal levels.

His practice areas include all types of the UK visa applications, naturalisation and EU law applications, and full-scope corporate immigration support. Mr. Kosarenko has extensive experience in the Points-Based System (PBS), including sponsored migrants, highly-skilled migrants, entrepreneurs and investors.

Ruslan Kosarenko has a unique track record in advising investors, entrepreneurs and high-net worth individuals. He is an expert in Tier 1 Investor and Entrepreneur applications, acting for both corporate and individual clients. He has established professional relationships with accountants and tax advisers, barristers and counsels, wealth managers and other advisers enabling him to provide efficient service.

Ruslan Kosarenko provides strategic advice and bespoke solutions for the UK businesses sponsoring overseas workers in a wide range of industries, including IT, fashion, media, finance, construction, transport and healthcare. He assisted a large number of companies with their compliance obligations and sponsor licence applications under Tier-2 and Tier-5 categories.

Ruslan is a regular speaker on the human rights and immigration law issues at professional conferences and expert panels.

Professional Membership & Registration

  • Office of Immigration Services Commissioner (OISC)
  • Immigration Law Practitioners’ Association (ILPA)
  • Regulated by Solicitors Regulation Authority as a Director of Sterling Lawyers Ltd
  • International Bar Association (IBA)
  • British-Ukrainian Law Association (BULA)


  • University of London (LL.B, Hons)
  • University of London (Post Graduate Diploma in EU Law)


English, Russian, Ukrainian, German

Completed courses and workshops

  • Foreign national (serving) prisoners
  • Tier 2 in practice – policies, procedures and future proposals
  • Home Office policy, concessions & the exercise of discretion outside the rules
  • Don’t fall in love – significant others post 8 July 2012
  • The general grounds of refusal and applications for leave to enter
  • The new family migration rules
  • Article 8 update
  • How to appeal to Immigration Judges
  • Family law for immigration practitioners
  • Adoption, a guide for immigration practitioners
  • Surrogacy: immigration, nationality and family law issues
  • Criminal law for immigration practitioners
  • Tier 1 investors and entrepreneurs
  • Employment Law for Immigration Law Practitioners
  • Tier 2 – Everything you need to know
  • Essential tax for immigration practitioners
  • Immigration Act 2016 ILPA
  • DT 1660 Tier 1 Investors and Entrepreneurs
  • Update: Recent Developments In Immigration Cases
  • DT 1728 ILPA Conference on Business Immigration in the UK


  • 6th Biennial Global Immigration Conference, London
  • Round table on “Ukraine-Russia Crisis – 1 Year after the Annexation of Crimea”
  • Innovation in the legal services market – growth, skills and new business models
  • The future of judicial review – assessing the impact of changes to funding, costs and procedure
  • What to do and what not to do when taking cases in the higher courts
  • The future for UK immigration policy – regulation, enforcement and the Immigration Bill
  • MALAYSIA-UK DIAMOND JUBILEE FORUM (London, 14 September 2017) supported by MIDA, MATRADE and The British High Commission Kuala Lumpur

Speeches & Presentations

  • Ukrainians in the UK: Seminar on Immigration and Legal Issues, Ukrainian Institute, 4 December, 2014
  • Ukrainians in the UK: Seminar on Family and Marriage Legal Issues, Ukrainian Institute, 27January 2015
  • Ukrainians in the UK: Seminar on Ukrainian Passports; Update on New UK Visa and Entry Rules, Ukrainian Institute, 16 April 2015
  • Expert Seminar: Investing and doing Business in the UK. Entrepreneur, Investor and Business Visa Rules, Ukrainian Institute, 25 June 2015
  • Q&A Session: EU Referendum Implications for European Entrepreneurs in the UK, StartUp Incubator Launch22, 18 August 2016
  • Q&A Session: Brexit Implications for the EU nationals in the UK, Drystone Chambers, 26 September 2016
  • Brexit Immigration Implications for EU Nationals in the UK, Society of Danish Engineers (IDA) and Association of Danish academics in Law, Economics, Social Sciences (DJØF), 15 November 2016
  • Practical Implementation of Immigration Law and Human Rights in the UK, London School of Economics, 14 March 2017
  • Brexit & Future of the EU Nationals in the UK, BPP University, 24 April 2017

 Contact Ruslan Kosarenko:

Tel. +44 (0) 20 7822 8535

Fax: +44 (0) 20 7183 7379

E-mail: info [at]

To book appointment online with Ruslan Kosarenko please click HERE

  • 11 years of legal and immigration law experience
  • ILPA membership
  • OISC Level 3