VOSA has announced it is proposing that from next August the fee structure for MoT tests will be changed to allow a half-price re-test for a vehicle that has been removed from an MoT testing station for repair after failure, provided the re-test takes place before the end of the tenth working day after the original test. At present, if a vehicle is removed from a testing station for repair to anything other than a trivial fault, the tester is obliged to carry out a full re-test, for which he is entitled to charge a full fee.

Info courtesy of FBHVC.
AVO will keep you updated with progress.