Lewis Silkin LLP is a British law firm with offices in London, Oxford, Cardiff, Manchester, Leeds, Belfast, Dublin and Hong Kong.

Lewis joined the practice full-time in the 1950s after leaving the House of Commons and relinquishing some parliamentary duties he had undertaken on first becoming a peer.

[7] In 2014, Lewis Silkin launched a fixed fee employment law service, rockhopper.

[14][15] In 2013, the firm took part in a charity shop takeover for Ty Hafan[16] and Helen and Douglas House.

[17] In 2014, the firm organised an "alternative" triathlon to raise money for Oxford Homeless Pathways.