Andrew May wrote:

Astro Lighting have a 'Coastal' range that would probably fit the bill.

I had a search to see what local stockists there are, as wellmas John
Lewis it turned up this electrical distributor, I'd never heard of them
before

https://www.medlocks.co.uk

Be warned though, they will not be as cheap as something from Screwfix.

When I looked at the above website, I had to check with companies house
that medlocks isn't a member of the kingfisher/screwfix group, I think
you can safely say their web-designer was "inspired" by the SF site ...