SDLTM33240 - Ordinary partnership transactions: Representative partners - Para8
Anything required or authorised to be done by or in relation to the responsible partners may instead be done by or in relation to any representative partner or partners.
A representative partner means a partner nominated by a majority of the partners to act as the representative of the partnership for the purposes of SDLT. Any such nomination, or the revocation of such a nomination, has effect only after notice of the nomination, or revocation, has been given to HMRC. Nomination can be made by letter to Technical & Guidance Team, the address can be found here