The iron aqueduct on the canal at Cosgrove in Milton Keynes

Paul Whitewick takes us to the aqueduct that takes the Grand Union Canal across the Great Ouse at Cosgrove in Milton Keynes.

He also looks for the locks that took the canal down to the river and up the other side of the valley before it was built.

There's more about their railway and canal explorations from Paul and Rebecca Whitewick on their website.