From 6 April 2016 most UK companies and limited liability partnerships ("LLPs") must keep a register of people with significant control ("PSC register") in addition to their current statutory registers.

From 30 June 2016, companies and LLPs will also have to deliver the information contained in their PSC register to Companies House when filing their annual Confirmation Statement (which replaces the Annual Return from June 2016).

The new requirements aim to improve transparency and trust by making public disclosure of the individuals who exercise "significant control" of UK companies and LLPs.

The new requirements do not apply to companies trading on the LSE main market, AIM or regulated markets in an EEA state, or markets in Switzerland, the United States, Japan and Israel. Such companies already have disclosure requirements in relation to major shareholdings.