It seems to be consistently one of the cheaper petrol stations in St Albans and near to M25/M1 so wouldn't be surprised...
(Not affiliated to it, but i monitor prices using: http://tinyurl.com/ex9ty as I have a choice of about four places where to buy (Hertford, Dunstable, St Albans etc due to work.)
70k+Bonus+Car+Benefits
£45k - £60k pa + Double OTE + Car/Allowance
£45,000 Basic £55,000 OTE