Hi Guys
Just been reading the posts on this thread and though I'd better put in my two penneth, so as your not surprised on convoy day there is no exit on to the A14 from the M1. However it ain't all bad news, just travel a bit further up and cut across or come off the M1 at 15a, go into Northampton and pick up the A5199, this road goes right past the event (well, it goes past the glider feild next to the event site).
Time wise from M1 J15A up M1 and cutting across takes about 40-45 minutes at LR speed (ye I know Fronty speed is a lot faster but needs must at times). A5199 might take 5 minutes longer but it's a more leisurely drive, also there is a junction where it crosses over the A14 so you could meet up with folks coming in from East Anglia, A1 corridor.
Bit more than two penneth, but hope it helps !!
Regards
Stuart
Remember, keep the greasy side down!