Point of reference for a recent claim. Submitted EC261 for all four of us - as well as additional expenses for a 24 hrs delay - on 27th July and received an affirmative response today 7 1/2 weeks later.

Our claim for the outbound on the same trip has been disputed by BA - submitted claim on 8th July, received offer of out of pocket expenses only 6 weeks later. Responded with bank details for out of pocket expenses and to ask whether final decision to refuse EC261 and 5 weeks later no response. A mixed bag. Thanks to those of this thread for their advice to date and others for sharing their experiences.