There was a similar money-wasting fiasco with East Midlands Airport changing its name to Nottingham East Midlands Airport, in spite of being in Leicestershire, and being closer to Derby than Nottingham. Some confusion, with aircraft calling Nottingham Radio at Nottingham Aerodrome when they were en-route to EMA.
Also suddenly its position in the flight guides changed from E to N.
Now, common sense has forced it to change back to East Midlands Airport.
Sounds like Halfpenny Green has been through the same process. I'm just glad some common sense seems to be succeeding.
Reminds me of Royal Mail / Post Office who had a bright idea of spending millions calling themselves "Consignia". Fortunately that idea also fell (expensively) flat.