Coffee is high quality. All the milks. You can buy beans too. Selection of cakes and buns (gluten free, lactose free) is great! Recently bought a pistachio croissant for my wife who said it was very satisfying.
Best Cafe near The Coombe (you'd likely go here a few times, so be sure to use the Squid app to get a free coffee after you buy 8!) .
I believe they only do brunch/lunch at the weekend. But check this out for a heck of an Eggs on Toast! It reminds me of the high standards to which the cafes Urbanity and Social Fabric adhere.
However, even though they always have 3+ gluten free cake choices, they don't have gluten free toast.
Music is (right now, anyway) low in volume and tone. Exactly what you want from a cafe. No radio rubbish.
The best cafe I've seen for folks with babies and toddlers as there are books and tactile toys.