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Dell Outlet...
https://outlet.euro.dell.com/As much as Velocio's laptop is well priced, it's a few generations old and a new £500 laptop with an 11th gen i5 will be much quicker (although it won't look as slick as the X1 Carbon and the X1 will probably have longer battery life)
(the 8th gen chips were quite a jump up from 6th and 7th, and the current gen graphics have improved a fair bit too)
Something like the below. The prices there are ex-VAT but if you can find someone that's a student then you can get a 20% off code so you'll pay about the same as the listed ex-VAT prices.
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About $20 here now https://www.vip-scdkey.com/software/microsoft-pc-10-pro-oem_1227-20.html Probably others that are cheaper but I've used these a few times.
I think they're semi-legit ones. They're OEM ones which should technically be sold only as part of a new PC. I've had no issues with them though.
My googling is shit, looked like about £100!