For those who have got this far:
If you’ve slogged your way through the entire site then well done: you have proven that you have the endurance and dogged determination to endure your way through just about anything. A mere end to end will hold no fears for you. Set forth on your path with confidence.
For those who have stumbled upon this page without finding all the golden nuggets of wisdom contained in the site but would like to see what sort of conclusion has been reached by those who have:
You now have all the answers you need to plan and complete that Land’s End to John O’Groats [or vice versa] ride you’ve always talked about doing but never got around to. You can now plan, train for and ride your route with confidence. You no longer have any excuses. Put a cross on the calendar and start planning!