31a/41d. Tapper belts out a presidential air (4,7) -e-- B-e-t--
40d. Stephen was a spokesman (5)R-c--
73a, Champion spread out west (4) M--o
20d. Cork folk, in short (6) R-b-l-
11d. Is purli a place 105 across (gael) can feel at home in London (7) R-I----
Many thanks - find this puzzle very hard - not good on sport -