Inside UK's largest private collection of post boxes

A mail enthusiast has spent more than 30 years amassing the largest private collection of post boxes in mainland UK.

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Steve Knight, 63, began his collection 35 years ago after noticing how the red pillar boxes stood out on the UK's streets.

The Colne Valley Postal History Museum, in Halstead, Essex, is home to 166 post boxes, 25 stamp vending machines and thousands of pieces of ephemera. Steve opened the 536 square foot museum, based in his garden, to the public 30 years ago - and has welcomed visitors across the globe.