A no frills, 15 minute shoulder massage was exactly what I needed. It relieved so much pain from sitting and I was able to pop in during my lunch break and be back at work in time.
This is an unassuming place near King's Cross station. The staff were very pleasant and welcoming, though there was a bit of a language barrier that meant we didn't discuss the treatment as much as I expected. The massage was on the firm side, but the therapist did notice when I was uncomfortable and adjust her technique. All in all, I would go again.