s 542 Transfer of C’s trade ...
(1) Subsections (2) and (3) apply for the purposes of contribution allowances under Part 5 if— (a) C’s contribution was made for the purposes of C’s trade ..., and (b) the whole or a part of the trade ... is subsequently transferred. (2) If the whole of the trade ... is transferred, writing-down allowances for chargeable periods ending after the date of the transfer are to be made to the transferee instead of to the transferor. (3) If a part of the trade ... is transferred, writing-down allowances for chargeable periods ending after the date of the transfer are to be made to the transferee instead of to the transferor to the extent that they are properly referable to the part transferred.