The registrar shall allocate to every F2UK establishment of an overseas company whose particulars are registered under section 1046 a number, which shall be known as F3the UK establishment's registered number.

F4The registered numbers of UK establishments of overseas companies shall be in such form, consisting of one or more sequences of figures or letters, as the registrar may determine.

The registrar may on adopting a new form of registered number make such changes of existing registered numbers as appear necessary.

A change of F5the registered number of a UK establishment has effect from the date on which the company is notified by the registrar of the change.

For a period of three years beginning with that date any requirement to disclose F6the UK establishment's registered number imposed by regulations under section 1051 (trading disclosures) is satisfied by the use of either the old number or the new.