Linux

I've had great results with various refurbished Dell Latitudes from eBay over the years. I have a stack of about 5 or 6 of 'em and they've all run many mainstream Linux distros with fantastic out-of-the-box support. I pass 'em out to members of the household whenever a laptop is needed and they'll usually get the job done.

I'd just type in "Dell Latitude" on eBay and filter by price and such. I suspect any model with an i5 and 8GB RAM oughta be fine for light programming work. I've found sellers with high ratings (like 97% or higher) and thousands of sales are pretty reliable (and tend to have return policies in case you get a lemon). Just test all the hardware (webcam, microphone, headphone jack, USB ports, ethernet, etc) as soon as you get it.

I've saved a lot of money over the years buying secondhand, and these machines have been running without a hiccup for years of casual use.

If you're able to code from a terminal, and care about longer battery life (my main concern when working from a coffee shop or elsewhere), I'd recommend getting a used android tablet, pry something from xiaomi or oneplus. You can find a decent model used for around that price with > 8 hour battery life easily.

Get a good stand, a solid bluetooth keyboard (logitech makes some great portable ones), and put termux on it (can probably handle light python locally).

If you need it to do CPU powerful tasks, use termux to remote into a VPS or your home server, and let a plugged in linux machine do the work so you can save your device's battery life. This is how I code at least.

Dell latitude 14 inch 5430 or similar, cheap ish. Its got all the wants and needs. Plenty of ports. Its dell so it'll survive forever.

A light Chromebook?

loving my recently acquired T480. not the fastest by any means, but solid and great keyboard. plus non-soldered memory allows for upgrades. got mine off craigslist for 120, a steal.

Keep browsing eBay and HotUKDeals. You can easily find something really good for <£200.

This 11th Gen Intel Dell laptop was going to £150 this morning and I was on the verge of ordering it and adding more RAM.

This sub is obsessed with Thinkpads, but when you're looking for a secondhand bargain then you pick up what comes opportunistically. The market is flooded with Dells because businesses change machines long before they go out of date and generally keep them in very very good condition.

If you're in the US, refurbished thinkpads are probably the best option. Not so much here in Australia (but you mentioned GBP so perhaps you're in UK). Whatever. I bought a refurb Dell Latitude 3120 for AU$229

mfg yr 2021 Intel(R) Pentium(R) Silver N6000 @ 1.10GHz 8Gb RAM Intel UHD graphics Intel Wi-Fi 5 9560 (160 MHz) Bluetooth 5.0 Display: 1366 x 768 11.6" touchscreen 2-in-1 Disc: M.2 256Gb PCIe NVME Class 35 SSD 1.35kg

Runs voidlinux like it was born to it. It's my travel laptop.

small tuxedo computer

I'm loving the new Snapdragon laptops, especially if you don't have any heavy (read: gaming) workloads!

Try Lenovo IdeaPad Slim 5.

Thinkpad x1 carbon gen 6, or if you're willing to up your budget a bit, a x13 is also a great fit.

I'm not sure how common they are outside Japan, but I have a little (about 12" I think) Panasonic "Let's Note" that I use quite a lot as a lightweight coding (and retro/indie gaming :D) device that I can throw in even my smallest bag when there's a chance I'll have to kill more than a few minutes. They're designed to be a little bit rugged. I had Ubuntu on it previously, now Mint, and the only problem I've had is that Linux somehow sees two screen brightness systems, and by default it connects the screen brightness keys to the wrong (i.e. nonexistent) one. Once I traced the problem it was a quick and painless fix.

They seem to be sold worldwide, so you may be able to get one cheaply second-hand. One thing to be careful about is the fact that in order to keep the physical size down, the RAM is soldered to the board. Mine is an older model (5th gen iCore), and has 4GB soldered on but also one SODIMM slot, so I was able to upgrade to 12GB total. But I've noticed that on most later models they got rid of the RAM slots entirely, so whatever RAM it comes with is what you're stuck with.

Thinkpad Thinkpad T480. Can find many within your price range. Great quality, most of it is replaceable including keyboard and display. Aside from actual hardware failure or damage, the one thing that gets hit long term with laptops, the battery, is super easy to replace and there is both an internal and external if you want really long life

Just popped Arch on a Thinkpad Carbon X1 gen8. There about 300 on eBay. Great decision

I use Arch btw

Used DELL 5310. Intel 10th-gen, 60Whr battery (goes 8+ working hours on a charge) often 16GB RAM and at least a 256GB SSD at that price range. Upgradeable (DDR4, NVMe) too.

I'm in the UK, and I've had decent laptops from rapidIT and ITZoo, both .co.uk as far as I remember. I can't remember which laptop I got from Rapid as it was a few years ago, but the first one had a faulty motherboard, and they swapped the laptop with no issues.

I had a Stonebook branded Clevo N750BU from ITZoo, which is an i7 based laptop, and Mint works perfectly on it. It's quite old now, so you'll probably get a newer one for your budget, but with a RAM upgrade it runs everything I throw at it. I use it for designing and editing logos in Inkscape and Krita, and for editing a website in html, css, and javascript, so anything newer should do it even better :)

Not sure if it's available where you're located, but did find this listing. https://a.co/d/bztqux3

If you're going to hang out in coffeeshops just get whatever has a clearly visible Apple logo and spend the rest of your money on a beanie, airpods and fake glasses.

A Chromebook?