Just to help anyone here, if you are missing TPs and / or Avios. Firstly screenshot any boarding passes / digital boarding passes before they vanish or get lost

- first use the online screen if that exists for your flight, inside My Executive Club
- otherwise use the web form for airlines that need manual processing in the same part of My Executive Club - missing Avios.

- wait at least 3 weeks for the above to go through, note that Wednesday mornings (UK time) is often a big update time

- then telephone BAEC and register your missing Avios/TP claim over the telephone - many people skip to this stage
- sometimes the BAEC agent will ask for an email of (e.g.) boarding passes. they will give you this entry point:. First log into your BAEC account, then enter this URL:
https://www.britishairways.com/ecsupportingdocs/
- theoretically you are only supposed to use the above after speaking to an agent, but there are some reports of this link correctly giving TPs/Avios regardless.

- After another couple of weeks, call again and check they have received the above / processing the above.
- After another few days call again. At some point you will get an agent who will see the every growing list of agent entries and do something about it.

Do NOT send an empty webform (or use the Complaints Portal) outside this format, the chances are they will go to BA Customer Relations, not BAEC, and CR are overloaded. In particular do not send chaser webforms, that just adds to the backlog. GGLs and Prems should use their priority email address instead. If you are GGL or Prem and don't know that email address then telephone them and they will start the process as well as give you the email address. Twitter is also not going to work, they are BA not BAEC.

Yes it is slow but the last bullet point will work at some stage.