I've been told by one 'in the know' that Lakenheath's F15 and Coningsby's Typhoons will come and play over Norfolk if the weather offshore is above certain limits. All to do with survivability if they had to jettison the jet.
Maybe it's also got something to do with the distance between the new SAR bases, now Her Majesty no longer supplies the service?
All the same, we still get F15's and heavies inbound to Lakenheath and Mildenhall trundling overhead. Long may it continue!