current estimate of price for meal is £5 each way
Correct - that will also enable a choice of menu's for those that wish to purchase meals. I believe that children
may be charged a different (lower) price.
Aren't some "last minute" deals, already charging for inflight meals?
Yes, although in many cases, last minute pax cannot obtain a meal at all at the moment - meals are not provided to late booking pax as policy. This may of course change in the future.