I think you can only just make the journey in this time, it's over 200 miles and even if you average 70mph (so speed in reality) you'll take a little over 3 hours. the best I ever did (years ago) from Warrington to Heathrow was 2hr50mins, then you need to allow for parking/handover.
good luck, personally I'd leave a bit earlier to allow a bit of contingency.....
Last edited by: idle_chatterer on Tue 23 Nov 10 at 07:08
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