Well done getting 10K, I'll keep that in mind for the next time they mess up my special meal. From one veg to another, my advice is to always bring your own snacks! IME BA has the worst vegan meals so even when they do get my meal right, it may not be edible!

@DragonSoul I fly CX twice a month and never had an issue with the vegan meal, and its always been tasty!

Or you could keep pushing for more. Perhaps they'll decide the 10k was unauthorized or inappropriate and claw back 9k avios.

Sorry. Should have said that I've never had a vegetarian meal on CX because they weren't loaded, and there was never another option.

OP has been asked but not answered questions regarding cabin and route. Does this make a difference? I would say so. A short overnight flight in Y from BOS/LHR is very different to travelling in J from LHR/SIN.

Frankly I find the idea that the OP is demanding 20k avios ludicrous. The offer of 10k is already generous. Of course in context of this being F on a real long haul flight, then perhaps 10k is not so generous. Although I am sure there would have been plenty of options had this been the case.

Last time they forgot kosher meal LHR-BKK in CW as GCH, after much discussion maximum I could get was 4K Avios. I could eat nothing at all for whole flight apart from an apple.
Cabin crew confirmed it was a catering mistake, my meal was listed on the manifest and crew noted both meals were missing when they checked meals but didn't want to delay flight by reporting to catering.

You got 10k miles for eating a meal that you didn't choose... Good result IMO.

You ate another meal, it later turned out that your ordered meal was actually on the plane so presumably you could have had that as well if you wanted, AND you've been offered 10k avios. Nice work if you can get it.

10,000 avios at 1p/point is £100, unless it's a common occurrence just take them and be grateful they cared enough to offer compensation at all!

Each to their own, no IFE is a real pain IMO on any flight over a few hours, the last time that happened to me (last month) I received 20,000 avios. Not having your special meal, but eating a regular meal anyway, and getting 10,000 avios sounds more than generous. Particularly as it sounds like you weren't that fussed about sticking to your ethical diet when offered an ordinary meal.

What else is there to say...I think at 10,000 Avios and a meal, which must have included some non-meat bits, you came out ahead in my book.

"Bear equal responsibility"? Seems a bit harsh. If I know I'll be getting a meal on board I won't eat before. Last thing I'd want to do is to order a special meal and then get most of it thrown away because I'm already full.Packing your own food may not be so clever. If you do get the special meal on board and then turn up at customs at the other end with prohibited items. So might have to throw away your own food before you get to customs. As you may gather I seriously oppose wasting food.The good thing about BA in OP's post is that at least they admitted responsibility. 10k Avios seems reasonable compensation. This is a welcome change from BA's attitude of late.

Chances of "significant extra compensation" - zero. Don't waste your time. 10,000 Avios is enough.

Not surprising to see the usual defence tactics though - OP should have eaten before etc etc. OP ordered a special meal....it should have been available at the right time. Simple as that.

If you wanted to buy 20,000 Avios from BA it would cost you £335.

In terms of valuing Avios spending, at 1p per Avios, 20,000 Avios is £200.

Your £100 worth of Avios for a missed meal is plenty compensation IMO.

The OP has been severely over compensated and should keep quiet, CR have been known to reduce the amounts offered if incorrect.