GGL line told me this morning they would only book BA codes (incl codeshare) which isn't helpful for certain destinations.

I managed to get onto flight tomorrow but think I was a few hours ahead of trying to sort compared to most other pax on the flight. A friend and his family were also meant to be on the same flight and were told nothing now left for at least a few days so he's booked them a Norwegian tomorrow and will try claiming from BA or travel insurance.

Good luck to all those needing to travel today.