Watch Time Team Season 19 in Australia

Tony Robinson and the team visit a tiny windswept island off the coast of Wales. The only way to get to it is by rigging a 500-metre zip wire way above the wave-lashed rocks. Incredibly, it seems that Gateholm Island in Pembrokeshire was once inhabited, but whether by Romans, Vikings, Celts or druids nobody knows. A handful of mysterious objects were found on the island years ago, including a rare Roman stone phallus and a beautiful bronze stag, suggesting that it may have been some sort of religious centre. Of course, the team have to dig for answers, but the weather's throwing everything it has at them. To make their task that bit tougher, they discover they also need to dig at a second site a quarter of a mile away. Although this one, thankfully, is on the mainland. Team leader Francis Pryor thinks it looks like what they're investigating is a classic Iron Age fort, with curved banks and ditches on one side and a sheer cliff on the other. If he's right, it should give Phil Harding and his diggers at least enough work to keep them busy for three days. And if he's wrong, there's no hiding place on this beautiful but bleak coast!

There's a problem in the chocolate-box village of Bitterley in Shropshire. The village's school and cottages cluster prettily around the green. But the village church and the manor house lie more than half a mile away, on the other side of a lumpy, bumpy empty field. The villagers, led by energetic headmistress June Buckhard, have been exploring the field and believe that their village used to be much bigger, with the field full of houses and streets. They have called in Tony Robinson and the Team to see if they're right. But they're not expecting the professionals to do all the work. Half the village turn out, ready to dig test pits in their gardens and in any spare piece of land they can get on to. Trenches appear almost hourly in gardens, from the smallest cottage to the grand manor house lawns. And it takes every hour of the three days for the villagers to get their answer. But judging by how much they seemed to enjoy it, they're probably still out there digging anyway!

Tony Robinson and the Team head to Dunwich, a village that's literally falling off the edge of the UK. Coastal erosion has eaten away most of this once-bustling settlement, and before the whole place is lost to the sea, there's a last chance to find out more about the lost origins of this dramatically situated town.

Tony and the Team visit Newmarket, the birthplace of horseracing, in search of the earliest archaeological traces of the sport of kings. They dig in the heart of the historic town, in search of the remains of King Charles II's racing stables - arguably the world's first stables dedicated for racing.

Tony leads the Team to the village of Beadnell on a beautiful stretch of the Northumbrian coast, to explore an unusual promontory, from which mysterious fragments of human bone have emerged over recent years.

Two hundred years ago, Swansea was one of the wealthiest cities in the country, if not the world. The source of those riches was neither the coal nor the steel recently associated with the area, but copper. The Welsh port city once led the world in copper smelting, but today there's almost nothing to be seen of this unique heritage. So Tony Robinson and the Team investigate one of the very first copper works, White Rock.

Property magnate Paul Whight has two very expensive hobbies. He collects and drives classic racing cars, which he keeps in the grounds of his second obsession - his beautiful stately home and garden in Essex. Paul is so keen to know everything he can about the history of his home that he's rashly invited Tony Robinson and Time Team in to do their worst.

Eight hundred years ago the people of Kenfig on the south coast of Wales thought they had built the perfect town, nestled round a harbour with easy access to the sea and a sheltered position. The town appears to have been a thriving commercial success but then it vanished, leaving just a few castle walls to mark its existence.

The Roman legionary fort of Caerleon in South Wales is one of the most famous and best preserved Roman sites in Britain. It stood on the edge of the Roman Empire, but its huge amphitheatre and immense baths, and the scale of its ruined walls, are all testament to its power and importance. But just outside the fort, archaeologists have discovered signs of yet another huge structure leading from the fort down to the river. It seems to be a vast courtyard surrounded by stone buildings and with a mysterious square structure standing in the centre. Joining a large team from Cardiff University, Tony and the Team have just three days to help piece together the answer. And when they do, it casts new light on what was once seen as solely a military outpost.

For generations a family of Somerset farmers have been wondering if there was ever actually a castle on top of the hill they call Castle Hill. Records show there was a Norman castle in the area, but they are not clear about exactly where and there are several likely locations. The only answer is for Tony and the Team to dig - once all the kit has been hauled up the steep slopes.

Tony and the Team don their hunting green, pick up their bows and arrows and head for the fringes of Sherwood Forest, where residents of Clipstone village in Nottinghamshire believe some impressive ruins in a farmer's field may have played a part in the ancient tales of Robin Hood and Bad King John.

Tony Robinson investigates how burial customs have changed and evolved over thousands of years of British history. Thanks to two decades of digging burial sites, Time Team can draw on extraordinary evidence from Neolithic bone caves, Bronze Age cemeteries, Roman mausoleums, jewellery-laden Anglo Saxon burials and even funeral pyres. And with the help of resident experts Jackie McKinley and Francis Pryor, Tony explores how, from the flowers on the grave and the black veil to the wake after the funeral, the way we bury our dead is rooted in customs that go back thousands of years. Some of the Team's most intensive digs have involved burials and the programme revisits many impressive sites, including one in the Outer Hebrides, one in the Peak District and a Roman fort near Hadrian's Wall.

With over 250 amazing sites and tens of thousands of finds to draw on, it's hardly surprising the Team find it hard to decide which has been their greatest discovery. Revisiting digs that produced rare and fine jewellery, gold coins, huge and intricate mosaics - and some extraordinary archaeological fakery - Mick Aston, Phil Harding and Helen Geake defend and debate their choices for top honours. It's down to Tony Robinson to adjudicate.