I've just found this article on the BBC websites;
"More and more couples are choosing to tie the knot on a weekday. Is the tradition of weddings on Saturdays under threat?
A thick, luxuriant card embossed with joined up writing, slips out of the envelope. Your eyes light up - Sue and Mike are getting married in a castle and want you to be there on their big day. Then your face falls. The wedding is on a Tuesday."
https://www.bbc.co.uk/news/magazine-14371053
During our planning, we did consider this - but guests would all need the day off (and many would want the following day off)
But, venues do normally offer a good deal for mid-week Weddings.... Many suppliers will have more availability mid-week (if they are full-time).
Is this something you would consider?