Assuming that you are a military flight, Coltishall is almost certainly your best alternate - RAF, 24hrs, a 7,500ft runway, and only 40nm away.
The list above are all rather further, but Brize Norton is also RAF and 24hrs with a bigger runway (10,000 ft), but is 85nm which is a long way when you're ready for bed! All the rest listed are further than Brize (except for Birmingham which is about the same and has 8550ft of runway).
G