Peter47,
(Very) late evening out of HKG - LHR on return - no meal until breakfast.
Was this also BA?
I work for BA, and operated a HKG trip only a couple of weeks ago, and it had a full meal service ex-HKG. As did the one I worked about 5 months before that, and about 6 months before that too.
I am not aware of any changes to the onboard product and having just looked at the service guidelines and standards for the route, there is still a full dinner service ex-HKG on both evening departures.