1 Immunity found in numbers (6)
2 Lozenge prescribed by doctor during operating hours (7)
3 Lack of Tyneside media chief (4)
5 A favourite hot drink? (3,2,3)
6 Some trap ide in fast-flowing part of river (5)
7 Top family gets potatoes from Jersey (6)
9 Flags level of excellence required (9)
13 He parses complex models anew (8)
15 Madman in a cult is crazy (7)
16 After a bit, central Bern is snowier (6)
17 Put up oddly skinny net for this game (6)
19 In the beginning, Welsh imported liths to Stonehenge here (5)
21 Fruit peel, we hear (4)