Calculating the taxable profits: Capital Allowances: claims for Capital Allowances on partnership assets
Where a business is carried on in partnership, it is the partnership that claims the capital allowances and not the individual partners. This applies whether the assets on which allowances are claimed are partnership property or are owned by one or more of the partners but used in the partnership’s business (CAA01/S264), although there is an exception to the latter scenario where a formal leasing agreement exists between the partner and the partnership.
The normal rules on making a claim apply. Please refer to the guidance at CA11130 - General: Claims: Income tax.