Charles Rainford was quickest as the British Touring Car Championship held its season launch and final official test at Brands Hatch on Wednesday.

Darryl DeLeon topped the first of two pre-season tests for the British Touring Car Championship, setting the fastest time ever recorded by a touring car at Croft Circuit in North Yorkshire.The two-day test was the first collective public outing for the majority of this year’s BTCC contenders – 20 drivers...