Another success. 50% offer (combined with 2-4-1) J TATL booked for March cancelled.
Rebooked via gold line to September without extra Avios charge or any fuss. Call took from ringing to completion just 8 minutes.
Even better it's an A350 with the new club suites, so now it's now a case of which seats to go for. And just hope the travel restrictions have gone by then!