The recipient of a grant may repay all or part of it. If they do there is nothing in the legislation that lets them claim capital allowances on their true net expenditure.
ESC/B49 was introduced to deal with some such circumstances.
It lets a person who has repaid all or part of a grant that
has been deducted from expenditure qualifying for capital
allowances claim capital allowances on the amount repaid if:
These are the only cases where a person repaying all or part of a grant may be given capital allowances on the amount repaid. In all other cases you should refuse to give capital allowances on a grant repaid because there is nothing in the legislation to give them.