Found 29th Jun
Halfords offer a £40 re gassing service. Which is a flat rate and also due to new regulations have to check the system is not loosing has first. This is a flat rate so no matter how much gas you need it is the same price of £40. This is cheaper than most garages offer. I am aware there is a Groupon for ATS. But this was more convenient for me as I didn't have to book in just called in while passing, obviously dependent on if someone is free to do it. A cold deal for this hot weather.