Originally Posted by
corporate-wage-slave
If you are considering MCOL you don't need to do anything more. If you are considering CEDR, they need complaints to be either 8 weeks old or have a deadlock letter, so the usual phrase is "our answer will not change". CEDR in their first scan of a complaint do look for this. If you are near to 8 weeks then clearly it doesn't matter, but if it is much less than 8 weeks then you may be best off asking for that confirmation.
Quick update, created a case at the CEDR.
And created another claim at BA for an earlier fligth I had on the 10th of March to London City. Cancelled 7 days before departure and the departure went from 13:40 to 10:10. Lets see what happens.