Previously a senior officer in HMRC working in Special Civil Investigations (now Specialist Investigations), McKenna undertook complicated enquiries into cases of international tax fraud and tax avoidance.

A well known expert in tax investigations, he specialises in HMRC's information powers; particularly bank information notices and information exchange. He has assisted many individuals, trusts and companies subject to HMRC enquiries, negotiating successfully on behalf of his clients to reach pragmatic and beneficial solutions. www.smith.williamson.co.uk