The question on many Britons’ lips is: when will Bank of Dave start opening branches?

A few years have passed since Burnley’s most famous television star and entrepreneur Dave Fishwick hit our screens with Bank of Dave.

Since then, even more high street bank branches have closed, savings rates crumbled and small business loans difficult to obtain.

This Sunday, the popular businessman and Bafta winner has his first weekend primetime slot in his new show ‘Dave’s Guide to Spending Money’, which airs at 6pm on Channel Four.

Water baron: Dave can’t believe the price people pay for bottled water – so starts his own brand from a tap, Water of the North

He told This is Money: ‘We are very excited about getting a weekend prime time slot up against the television giants.’ He also reveals below just how close he is to obtaining a full banking licence.

In his new show, a one-off with more coming in the future, he investigates the rising cost of energy bills and questions why people buy expensive bottled water.

In true Dave entrepreneurial spirit, he starts bottling tap water after trying some which costs up to £50 a bottle, shown to him by a ‘water sommelier’.

Interestingly, he reveals you can find out what is in your tap water – which he labels ‘Council Pop’ – as water suppliers legally have to. Simply visit the website of your water supplier and tap in your postcode.

The water that he bottles in the show comes from the tap at his minibus business.

He gets advertising giant Saatchi and Saatchi to help with branding – and inspired by near-by beauty spot Pendle Hill, is given the name ‘Water of the North’.

Dave shows that a litre of tap water costs around 0.2p – whereas bottled water is nearly 70p a litre on average.

He takes his product around to local upmarket restaurants, and all of them agree that they’d stock the product, before Dave reveals that it is simply tap water, reminiscent of Del Boy with his Peckham Springs in Only Fools and Horses.

Power station: Dave visits Samso, an island in Denmark which is energy self-sufficient and is inspired to start his own mini version

To prove his point about surging energy prices, with most of the Big Six firms hiking prices imminently, Dave sets up a mini power station in a shed after an inspiring visit to Samso, an island in Denmark which is energy self-sufficient.

Although the set up costs are huge, Dave sticks up solar panels, a small wind turbine and an anaerobic digester to then put electricity into the grid, in order to power the Burnley Christmas Light switch on.

He accepts that most people would not be able to start a mini power station, but he points out that if communities get together, it could be a worthwhile exercise.

Furthermore, he discovers that collective switching could be the way forward for those who are struggling with energy bills.

He meets a group of pensioners in Sedgefield, Durham, who have flipped the energy model around and get firms to bid for their business. Some residents are saving nearly £400 a year.

Collectively, the move has saved residents £113,000 a year – and Dave believes that if more communities go arm-in-arm, they could save a packet on energy.

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