I think you should put in a vociferous complaint into Customer Service about this. As a Gold you would possibly not get an entirely boilerplate reply, but it would register in any stats that they keep of this situation. The offering to DME is quite similar to the previous domestic offering from LHR to MAN and NCL just a few years ago. If nothing else, BA should be giving out food vouchers to WT travellers, or providing doggy bags as they did during the Gate Gourmet (sic) strike.