Converted my 82 holdsworth Special back to a derailleur from a 3 speed SA. I have only a 48 tooth chainring in the front and a 5 speed cluster in the rear so gearing runs from 40.5 to 99, good for these parts. Having just done this it was my go to for today's ride. Very nice ride and pretty quick by my standards.
Ate some oat porridge bread, salami and mixed nuts for lunch and went to the balefill with 1/2 the branches from cutting down the 4 locust trees last week. My bowyer friend took a straight 8' trunk to dry and split into bow staves. Locust aint as good as hickory, Osage Orange or yew but it is still pretty good, especially when backed with bamboo.
Is a lot of the UK below 300 ft above current sea level? If the climate change predictions are correct a lot of the Eastern seaboard and the Southern states will be home for the fishes. Perhaps Kansas will have a lot of beachfront property.
Be well and safe and don't even think about stockpiling Water Wings. I have already got them all.