thanks for all the shared advice on this.
i wouldn't have thought to take a small lock, but it does make sense, especially as the ride will be more well known than last year there is always the chance of some chancers targetting it.
my main worry is the cut-off times. i'm starting reasonably late, so there's not much margin for error. my plan is to take it easy until Newlands, but the worry of the broom wagon may change that and i'm not sure i'll be much good if i go out too hard. at the moment the plan is to ride to Leith and worry about the rest after that - it will be 'homeward bound' from there, so i'm trusting my brain will just go into safe mode and pedal (i will have to remember not to turn right at the top of Coombe Hill and go for the real home).
i've also stopped worrying about sponsorship so much now. i had gone for a target of £725, which was the higher one set by Red Cross. if i reached that i received a jersey. as the minimum is £575 and i have achieved that, then i'm not fussed about a jersey. i shall be clad is Euskaltel Euskadi orange (as usual).
good luck to you all. see you in Green Park afterwards for a mass hug.