Question: Which circuit did Guy Edwards win?
SQL: SELECT "Circuit" FROM "2-10662806-1" WHERE "Winning driver" = 'Guy Edwards';

Question: What circuit did Rupert Keegan win in round 8?
SQL: SELECT "Circuit" FROM "2-10662806-1" WHERE "Winning driver" = 'Rupert Keegan' AND "Round" = 8.0;

Question: Who won Silverstone in a round after 10?
SQL: SELECT "Name" FROM "2-10662806-1" WHERE "Round" > 10.0 AND "Circuit" = 'Silverstone';