Show someone, anyone, an early Ford Granada and it’s an odds-on certainty they’ll mention ‘The Sweeney’. Ignoring the fact that the most famous Sweeney car was actually a Consul, few cars are so indelibly linked in the public’s collective memory thanks to Ford’s canny PR department. Watch an episode today and you’ll be stunned by the sheer volume of Dagenham cars they used – all of which were restricted to…