This programme looks at bread. As a nation, we routinely consume ciabatta, focaccia and naan, but how many of us can turn out a decent loaf? The biking bakers show how easy and rewarding it can be, visiting Doncaster market and baking a healthy white roll for the perfect bacon and sausage buttie.

When it comes to afternoon tea, the British like nothing more than a sweet treat to go with it. The Hairy Bikers, Dave and Si, set off for the Henley Royal Regatta, and on their journey they fill their hampers with cakes and treats made along the way. But why do the British have such a love affair with teatime treats? In their quest to find out, Dave and Si stop off at a swanky hotel to examine the history and conventions of tea, where they are forced to don suits.

From novelty cakes to birthday cakes, and croque-em-bouche to traditional wedding cakes, presenters Simon King and Dave Myers delve into the world of celebration cakes and face their biggest challenge to date. In this programme, the Hairies are tasked with making a five-tier wedding cake. On a quest to find out more, Dave and Si visit Patisserie Viennoise in Otley, Yorkshire, where they learn about the art of chocolate. To get up to speed cake-wise, Dave and Si start by making not one, but two tailor-made birthday cakes for four-year-old twins.

From birthday cakes to traditional wedding cakes, Simon King and Dave Myers delve into the world of celebration cakes and face their biggest challenge to date - making a five-tier wedding cake.

The Hairies journey to Manchester to meet Helen and Jonnie, the couple who are prepared to let them loose on their wedding cake. The boys decide to bake a traditional fruit cake with a Hairy Bikers twist, using quantities of ingredients so large the cake has to be mixed in a wheelbarrow.

This is a 14 minute edit of Season 4, Episode 4 (Celebration Cakes)

Dave Myers and Simon King look at baking bread. They make a classic brown loaf to go with a ploughman's lunch, and brown ale and cheese bread, served with onion soup.

This is a 14 minute edit of Season 4, Episode 1 (Bread)

Biking bakers Dave Myers and Simon King show how easy it is to bake white rolls in a Doncaster market, then commandeer a windmill in Lincolnshire to mill their own flour to make a classic brown loaf to go with the perfect ploughman's lunch.

This is a 15 minute edit of Season 4, Episode 1 (Bread)

This is a different episode to the other with same title that was broadcast earlier.

Si King and Dave Myers conjure up homemade naan bread and a curry on the shores of the Derwent Valley in the Peak District, then bike back to Dave's kitchen to bake a fantastic brown ale and cheese bread, served with onion soup.

This is a 15 minute edit of Season 4, Episode 3 (Bread)

Si King and Dave Myers visit Melton Mowbray to try their hand at making hand-raised pork pies at Ye Olde Pork Pie Shoppe then stop off at Dave's house to make two pies - a fancy chicken and wild mushroom pie and a more humble cheese and onion pie with parmesan crust.

This is a 10 minute edit of Season 4, Episode 3 (Pies and Pasties)

The bakers drive to Huntley in Aberdeenshire to sample an extraordinary range of pies including Scotch pie, macaroni pie and baked bean and mashed potato pie. Then they head off to the banks of the River Deveron to cook a salmon coulibiac to feed it to an assembled company of pipers and highland dancers.

This is a 15 minute edit of Season 4, Episode 3 (Pies and Pasties)

Dave and Si cook a traditional pasty at Geevor Tin Mine in Cornwall and face the ultimate test - will the locals be impressed with their efforts?

This is a 5 minute edit of Season 4, Episode 3 (Pies and Pasties)