Even though I had an issue finding the venue (The Treatwell Reminder message does not give the correct address for google maps to find it), Katy was really patient and guided me to the right place. It does say on the site that it is at her flat, so had I have read that, I would have found it quicker.
The treatment itself was exactly what I was expecting, Katy applied it evenly and with the right shade. It lasted about a week before it started to fade so perfect amount of time - thank you