Simon Smith Group

For many months now (It could run into years), My local SHELL Garage at Cubbington in Warwickshire now part of the Simon Smith Group has not had a suitable Air Line Facility for the local population, who need to check their tyre pressures on their vehicles.
What sort of service is this, the correct tyre pressure saves lives, and the environment, and why should I spend £80-00 each time I fill up when I cant even check my tyres.
We have been thinking about starting a campaign to boycott the garage until it gets a proper air facility at a reasonable price.