It has been some time since I visited the U.K. While I was there tea was the more popular beverage, and is usually prepared in the U.K. far better than most establishments in the states. I did note that several publicans advised the customer that the pub did not specialize in coffee and they might prefer the tea. The worst coffee award was for the carriageway sandwich shops. The stuff made used motor oil smell tasty. There was no Starbucks or similar chain shops back then.
Way back in time, I was stationed on temporary duty with the R.A.F. in a rural area. As I would be there for a while, and I was a coffee junkie at the time, I simply rang up a coffee dealer in London, got the price and posted a few notes to him and my local pub's landlord shortly received a tin of my favourite coffee. It was always placed by me at afternoon tea. This routine worked great for the six months I was there. This also built a friendship that for over three decades resulted in regular correspondence across the puddle.
In the the areas frequented by tourists, coffee was more available than in the areas that were frequented by the locals only for the most part.
I only wish Steve the opportunity to sample some of the Scot culture and enjoy the best blended teas in the World.

Slainte