U and YESTERDAY

Dave gets a nasty surprise when he opens the bonnet of a fast Ford, and an Austin Heavy 12 nearly a century old sets off a bidding war at the auction.

Derek, with help from the Mathewsons, drags a mini pickup out of the barn where it's been for 20 years, and a 350cc Douglas Mark V motorbike goes under the hammer.

Rob Bell looks at how the greatest invasion in human history was being prepared in Southern England and the buildings that helped with D-Day and Operation Overlord.

Experts uncover a WWII German trench system revealing a daring commando raid to capture it. And, the sunken remains of a tank show how dangerous preparations for D-Day were.

The team values rarities at Bletchley Park, near Milton Keynes. Objects under scrutiny include an ornate vase, an art deco brooch and a teddy bear.

Fiona Bruce and the team visit Burghley House, near Stamford in Lincolnshire, where objects receiving valuations include a rare medal awarded to a heroic pigeon.

There's an unlikely arrival at the North Yorkshire car auction - an Argentinian Army Mercedes G wagon that saw action in the Falklands War.

Derek has three scooters to collect, while also finding room for a Daimler and a teardrop caravan.

Rob Bell looks at how the greatest invasion in human history was being prepared in Southern England and the buildings that helped with D-Day and Operation Overlord.

Experts uncover a WWII German trench system revealing a daring commando raid to capture it. And, the sunken remains of a tank show how dangerous preparations for D-Day were.

The team values rarities at Bletchley Park, near Milton Keynes. Objects under scrutiny include an ornate vase, an art deco brooch and a teddy bear.

Robbie Cumming begins a new 170-mile journey across the north of England but soon runs into difficulty with a problem with his craft's propeller in Wigan.

Robbie Cumming crosses the Pennines on the picturesque Leeds and Liverpool Canal before lending a hand to hire boaters in Gargrave in North Yorkshire.

On the way to pick up two lovely '70s Lotus sports cars, Derek takes to the skies for his first ever helicopter flight in a 1967 Bell 47 chopper.

This week tells the tale of the two Mercs, but what will the moral of the story be? Plus, the team get stuck into a moddable favourite - a 2006 Ford Fiesta ST.

There's an unlikely arrival at the North Yorkshire car auction - an Argentinian Army Mercedes G wagon that saw action in the Falklands War.

Derek has three scooters to collect, while also finding room for a Daimler and a teardrop caravan.