if its dry, check this out at Santa Pod,there wont be any top fuel, but theres pro mod and all the national championship classes.
http://santapod.co.uk/summernationals.php
its only £14 for the day and an hour south of Donington Park, so you could do drag racing on the Saturday and British GT at Donington on Sunday
https://doningtonpark.msv.com/DP-19-BGT-F3-1
30th June BTCC is on at Oulton Park
World Superbikes is also on at Donington 7 July if youre into bikes
Midweek theres also the British Motor Museum in Coventry
https://www.britishmotormuseum.co.uk/
Also if youre passing Stratford upon avon and want lunch then go here!
http://caffeineandmachine.com/