I had Air Force One on a routing of ~7hours from Andrews to Mildenhall, routing in via Honiley - which hopefully means it passes directly overhead Chez LTS about 20 minutes before landing. It appeared to depart around 1pm BST but disappeared off ADSB Exchange as it headed out over the Atlantic. That would imply landing some time around 8pm, and i'll be on the lookout around 7:30pm.
Here's hoping it reappears once it gets back over land!
ADS-B Exchange - tracking 10682 aircraft (adsbexchange.com)