Which meridian is used to quote time zones from is irrelevant - the US don't use GMT in reference to their timezones, neither do Australia or countries in Asia nor Africa.

As for agitators wanting to move the prime meridian, well that's a new one on me!

Personally I'd prefer BST, or GMT+1 if you must.  Extra daylights in the evening are far more 'useful to me, to others the extra hour daylight in the morning might be more useful.  Which is why I posed the question as to what others prefer.