Is there a town in England without a large Tesco? At the moment there is at least one, and residents of Manningtree are hoping it will stay that way. This delightful Essex enclave is the smallest town in England with a population of only 900, and is preparing to battle with all its might against a new superstore opening in its historic coastal town.

Tesco already has an Express store in the town – against local opposition – and residents fear for the survival of their High Street traders if a larger store is opened too. There are also more than a dozen Tesco stores within a stone’s throw, so it doesn’t meet a local need.

So it’s timely for them that the dominant role of Tesco will tonight be shown on Channel 4. Dispatches asks if Tesco is abusing its power as Britain’s favourite supermarket, with 2,000 stores and 15 million customers a week, and almost twice as big as its nearest rival. The programme says that Tesco could soon become even bigger – but not if Manningtree protesters get their way.

Does Tesco always win? Do the residents of Manningtree stand a chance against them? And do local people support their small shops enough, or is the reality that they really do prefer Tesco?

When Tesco says “every little helps”, who are they really helping – their shareholders and profits springs to mind.