Haven’t been in the UK for a few years but when I did I used https://www.musclefood.com/. The meat was high quality.

Depending how much you spend your local butcher may do delivery to if they have commercial clients such as cafes, restaurants etc.

Google for your favourite local butcher, they likely do either ad-hoc home delivery or have a full blown e-commerce operation, especially if their a fairly high end butcher.

Most of butchers in the villages around me are delivering. Have you called yours to check if they are?

Our local butcher will deliver. At a price of course.