Tesco is the most successful supermarket chain in Britain. With around 3000 UK stores, it is the largest private sector employer in the UK.

With access to one of their largest stores, we spend 24 hours in Tesco to reveal the secrets behind this juggernaut's success. From finding out tips and tricks from Tesco staff to revealing the ingenious hacks to help you shop smarter.

We look at the history of Tesco and its founder Jack Cohen, the development into online shopping and deliveries, as well as finding out what happens in store from the moment they open their doors at 6am. This whirlwind of activity that keeps them at the top of the supermarket chain.