see
http://www.msttiming.com/testdays.as...CC&season=2005
The BTCC support series usually have testing 2/3 days prior to each race meeting. The BTCC itself doesn't have any testing apart from the media day at Donnington on 29th March. The only exception is independents who are allowed a small number of test days during the year which they can take when they like, usually at general test days and usually at short notice.