In reply to higherclimbingwales:
Google for amazon warehouse deals and then search for laptop there (can't find the deals easily from the main site). Once you find one you like the price of, check the CPU against a benchmark on passmarkcpu website (use the searchable list page
https://www.cpubenchmark.net/cpu_list.php ) - to make sure you're not getting a dog!
You should be able to get a laptop with at least 4GB Ram, large enough Hard Drive and a CPU with a benchmark test of over 2500 for £300 I expect.