Topping, a barrister practising on the northern circuit, fought a bloodless duel with Richard Burke on 12 Mar. 1784, after he had abused Earl Fitzwilliam in the latter’s hearing.
Topping made no mark in the House. On 3 Mar. 1807 he obtained leave to go his circuit. At the dissolution he was left without a seat. Joseph Jekyll who called him ‘Tiger Topping’, quoted George Wood as saying of him: ‘he was always either smearing you with honey or excrement’ and reported him as ‘at loggerheads’ with the renegade Sir John Coxe Hippisley on the Catholic question in May 1813.
