Seem to be a zillion options genuine Apple is £20 generic from about a fiver does it matter as long as it’s got the right connections ?

Non genuine ones often don’t work and if they work now they often stop worked when Apple do a firmware update (this applies to the newer lightning connector rather than the old style one). At least that’s been my experience!!

Aamazon Basics is a good compromise. Not too expensive and keep on working.

https://www.amazon.co.uk/AmazonBasics-Apple-Certified-Lightning-Cable/dp/B010S9M3L6

Echo Rockhopper’s comment- my $1 DX cable stopped working after the last iOS update. The Anker brand cables, with woven cover, have lasted better than the Apple ones.

I can recommend these.

Lightning Cable

Chose wisely and you will save money (edit Anker recommended above, their batteries are excellent so a good company ime). Our Apple ones last 3-5 years so even if the knock offs last just 1-2 you’ll be better off. We buy only original as we think they are worth the money.

The Apple ones are a bit pants. Belkin ones seem to last well.

Non-Apple-approved third party ones will produce an error message when plugged in.