Coventry Transport Museum is free, although some simulator exhibits aren’t. It’s also very good, and includes bikes The British Motor Museum is not free, doesn’t include bikes, but is also very good Bosworth Battlefield is a good family and kids day, although it’s not at Bosworth and about a mile from the battlefield 🙂 (there’s an exhibit explaining its position using recent research)
Fascinating insight into two very important parts of WW1 that I’d never knew existed. And run by a delightfully amateurish team of enthusiastic volunteers.