I think someone form the Rail Performance society will be on both the runs, probably John Heaton,or another experienced member,as then it will be meticulously logged, be interesting to see what it can achieve, from my personal experience of running on the WCML it looks plausible timings.
I have done London to Warrington stop in 98 mins and it has 66 mins Carlisle-Glasgow which slower than the 62 mins record of the Virgin non stop run, i was on the Virgin special non stop run, think we did it in 3hrs 55 mins approx, on the slower railway before the Trent valley upgrade and Rugby upgrade, i have always thought the virgin special could be beaten if the anyone bothered to have another go at it, i think it could be done in about 3hrs 50 mins or less with hard driving and clear run.
I have done London to Warrington stop in 98 mins and it has 66 mins Carlisle-Glasgow which slower than the 62 mins record of the Virgin non stop run, i was on the Virgin special non stop run, think we did it in 3hrs 55 mins approx, on the slower railway before the Trent valley upgrade and Rugby upgrade, i have always thought the virgin special could be beaten if the anyone bothered to have another go at it, i think it could be done in about 3hrs 50 mins or less with hard driving and clear run.