April done today, as I'd hoped. The "recycled" bike performed admirably, and I worked round the lack of a rear brake cable hanger with a block of wood. A more aesthetically pleasing solution is on order from an excellent LBS I've recently found and will cost £1.60. Having placed the order, I then spent half an hour chatting with the shop owner about steam trains and the days when bikes were bikes.
I pushed on a bit today and finished on 125 miles, the longest of the year so far. The final 25 miles were straight back into the stiff breeze, which was a test I was happy to set myself. I accidentally saved the ride half way round on my 520, and to save any faff I uploaded from the backup 200 - so much less climbing today.