PM163450 | Costs connected with the capital structure of a business
From HM Revenue & Customs · Partnership Manual
Fees incurred in connection with the acquisition, alteration or enhancement of how the ownership of a business is structured should generally be disallowed as the costs are regarded as capital expenditure for tax purposes. This will include costs incurred on:
forming, varying or dissolving a partnership
the incorporation of a partnership’s business (to a limited company)
partnership becoming a limited liability partnership (LLP)
Further guidance is available at BIM35525.