Nice. Some original ideas too,

Great grid! Nice to have a theme across all and then some red herrings within each category. 10/10

Very enjoyable puzzle. 5* :D

Loved it, thanks! I was just too slow.

Very good. Only just solved with half a minute and one life left. Took ages to see Warminster fitting in its group, even though that was the first link I spotted on the wall, and didn't see the Londonderry link, until I was trying to eliminate things from the Warminster group.

great grid

This is good.