HMRC’s guidance on film tax relief has been updated to include information on interim/final certificates issued by UK Film Council.
In essence, the guidance explains that a film production company responsible for the production of a film can apply to the UK Film Council at any point before or during production for interim certification that the movie is British.
The company can then claim film tax relief by submitting this certificate with its corporation tax return.
If any interim claim for relief has been paid, the company must apply for a final British film certificate from the UK Film Council after the film has been completed.
If the company does not submit a final certificate, any film tax relief paid on the basis of the interim certificate will no longer be due and will have to be repaid to HMRC.
No claim can be made without either an interim or final certificate.
See here for more details.