Fakin It

I have used Fakin It in Cockfosters for a few years, mainly for their tanning beds which are state-of-the-art, full of all the mod cons like water jet spray, high-speed fans, fm radio, and all variably controlled by the user. They are cleaned thoroughly between each use and the shop provides eye protection, wipes and deodrant free of charge.
The staff are always friendly and helpful and you rarely have to wait around. There's a choice of stand up and lay down beds. You can buy a course of minutes which works out the best value for money.
Parking is available on meters directly outside the shop (20p gets you 15 mins, just enough time to get in and out). Otherwise, you can park round the corner and take a 2 min walk to avoid paying into a meter.
They open at 9am on week days and seem to be open until 7pm so ideal for popping in after work.