England have called Durham leg-spinner Scott Borthwick and Kent off-spinner James Tredwell into their Ashes squad following Graeme Swann's retirement.
Borthwick, 23, could win his first Test cap on Boxing Day, though slow left-armer Monty Panesar is favourite to replace Swann for that game.
Tredwell, 31, has one Test appearance and will not arrive in time to play.
