When appointing a corporate shareholder incorporated outside the UK during company formation, Companies House may require a letter of legal personality to confirm the status of the overseas entity. You can use the template provided here:
PSC Register Considerations:
If the shareholder is an overseas company, it is unlikely to qualify as a Person with Significant Control (PSC) for the UK PSC Register. You should seek advice to identify the ultimate beneficial owner(s) and record them as PSCs or relevant legal entities (RLEs) as appropriate.
For further guidance on identifying and recording PSCs or RLEs, please consult our blog:
https://www.informdirect.co.uk/company-records/what-is-a-relevant-legal-entity-rle/