Coming home from the station last night, I had 433.075 running on the second VFO. As well as the 'local' Swindon repeater, GB3TD, I heard another repeater id - I managed to get GB3K as a fragment before a bit of flutter knocked the complete callsign out!
I just checked the repeater map and it was GB3KR in Kidderminster - quite a reasonable distance, so interesting to have heard. Here's a map
View Larger Map