The Train Truckers head to Germany to collect multi-million-pound maintenance machine that is so large it will need to be loaded onto two trucks. Meanwhile, Eric and Chris head down to Dorset to instigate a heavyweight diesel-engine exchange. The South Devon Railway are swapping their monster Class 37 for a smaller Class 25 and the only way to get the engine to its new home is by road.

Crews transport a brand-new high-speed train built in Japan and a vintage World War II steam engine.

Heavy haulage experts Ian Bagladi and Jamie Turnbull need to move a classical but abandoned 63-year-old, 70-tonne locomotive, through the English countryside.

Train truckers Zak & Alex face a four-day mission to deliver a pair of classic steam locomotives for an Autumn Steam Gala. The duo will travel over 500 miles in order to deliver the Great Western Manor Class and Large Prairie locomotive to the Mid Hants Railway in Hampshire. Meanwhile, truckers Ian and Jamie set sail to the port of Rotterdam to collect a Class 66 freight locomotive.

Expert hauliers Eric Harrison and Chris Case's mission is to move an iconic Deltic diesel, better known as The Royal Highland Fusilier, half way across the country to the Telford Steam Fair. But it's no easy feat, especially when the first challenge is getting this 100-tonne engine onto the trailer, out of the yard and onto the open road.

Terry and Jason have been called in to move legendary Steam Locomotive Britannia. The 68-year-old locomotive has undergone a major restoration in Crewe and is scheduled to start running at the Severn Valley Railway. But to get the famous engine to the preserved line, it must be moved 70 miles by road through unforgiving rush hour traffic.

Meanwhile Gavin and Callum need to transport a prototype battery-powered commuter train 422 miles to Scotland. The team will have to load it onto two trucks and drive cross-country on a journey that will see them slice a path through narrow, twisting Scottish lanes, a titanic task, even for the world's toughest Train Truckers.