All answers are, or contain, place names or islands in the British Isles
28) Youngster with singular footwear (8) ( begins with K)
52) Withdraw gratitude (7) (begins with T,U,V)
57) John Watt (5,7) (begins with W)
58) Count the dots to date this pottery (5,9) (begins with W)
60) Ozone alarm, chum (4,10) (begins with Y or Z)