The Court of Appeal unanimously dismissed an appeal from Birmingham Hippodrome Theatre Trust regarding HMRC's right to offset previously claimed input tax against a claim for overpaid output tax. While the theatre had incorrectly accounted for and paid output tax on box office receipts, it had also claimed input tax on refurbishment works. The Court confirmed that under section 81(3A) of the VAT Act, HMRC is entitled to offset the input tax claimed in error to prevent unjust enrichment, effectively putting the Trust back in the position it would have been had VAT been implemented correctly. The Court also found that the offsetting did not infringe EU law principles and the Trust's only remaining appeal option is the Supreme Court.