Exactly what you would expect from a Starbucks. The store (and most importantly the restroom) is clean, baristas are friendly, and wifi free. This location is usually not too crowded so service is decently fast. Seating is somewhat limited, as this Starbucks is rather small. If you are staying, consider requesting your drink "for here" as they will give you a mug.
American gold cards work in the UK, so keep collecting those stars! The benefits carry over (free syrups, soy milk, refills).
Overall, a good place for a short break. read more