It never occurred to me that Inverness and Scottish sometimes give me Portree, Orkney, occasionally Belfast, expect a readback, but don't want me to set it on the altimeter.
As ATS providers they're required to give you any information to affect the safety of your flight - but it's down to you to decide what to do with that information. I had a good example flying with a student the other day, when a military LARS provider insisted that the airway in front of us was defined on a RPS rather than (in this particular case) a local airfield QNH. Wasn't an issue for us because we were descending well below it anyway, but it would have been quite possible for them to push someone into an infringement due to incorrect altimetry.