Distance 1-way from RAF Mildenhall, Bury Saint Edmunds, EN IP28 8NG, United Kingdom to London, UK: 129.7 km (80.6 mi) via M11.
Driving time: 1 h 36 min (if traffic allows).
I live a few miles closer to London than Mildenhall on the opposite side of Cambridge. 1hr 36 is a pipe dream. You might just reach the bottom of the M11 from Mildenhall in about 1hr 10 mins. Allow another hour minimum to the centre of London. The big moan about Stansted is that its too far out of London. Mildenhall is about 40 miles further on.