Just back home - my write-up:
Overall summary; hard work, wet, headwinds.
Some lessons learnt:
1. Read the directions. Then read them again. It took about 20 miles before I understood what they all were, after which it was better.
2. Don't pack too much kit. I did and my legs are regretting it. But spare socks would have been helpful since the spare pair of gloves were great once it'd stopped raining.
3. Test equipment once you fit it to the bike; the rack failed after about 5 miles. One person stopped, but by then I'd managed to fit it back on using an orange bungee strap and my lock. Also the cleats/pedals weren't properly set up; I'd only used them once since getting the Secteur and that clearly wasn't enough since neither fitted perfectly.
4. Make sure you've properly set up your bike before signing on; I hadn't and left both water bottles in the car
I signed up and Tej (? spelt correct) from here said 'hello'. Didn't see any other CC-ers.
Weather wise it was wet. Very wet.
The start was fine and I tagged onto one of the front groups. However, after about 5 miles the front stays on the pannier rack failed, possibly not fitted correctly, with it falling back onto the road. I'd done that last night and hadn't tested it. Lesson learnt and 15 minutes wasted putting it back on in driving hail.
Nothing else seemed damaged and I couldn't fit them back without hassle, so rather than digging for tie straps I tied it back on with an orange bungee strap and my lock. This surprisingly worked well, but my thanks to the only person who stopped and offered to help.
I spent the next 30 miles catching up with people and going past, which was fine - making the control cafe in decent time. The rain cleared up by 11am and I'd swapped to my dry gloves.
However, the overshoes weren't waterproof and I'd got no spare socks. My feet were numb; which led to a fall in Nelson. No damage since it was very low speed. Cue two plastic wallets over the feet at Waddington to keep them dry, if not warm, for the rest of the trip.
In the cafe I met Tej again, and we went from Waddington to Whalley. At this point it felt hard going and Tej disappeared. I'd got a slow puncture and took about 20 minutes fixing it.
The rest of the 120km was pretty uneventful; I did almost all of the rest solo and got back in a total of 7 1/4 hours including stops. Surprisingly I didn't get lost at all, with two maps and the written directions assisting rather than a GPS.
Would I do it again? Probably, when it's warmer/drier.