The 250-mile long system covers an area that goes from densely urban to glorious countryside in just a single fare, easily transporting passengers from Central London into Epping Forest or the Chiltern Hills.

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Then on Saturday a mixture of ice and snow is expected along that eastern area as well as parts of Wales and England, with the heaviest snow due on higher ground such as the Cotswolds and the Chiltern Hills.

BBC: Snowfall due for parts of Britain

"This was a very tall structure, bigger than Big Ben, in open countryside against the Chiltern Hills, an area of outstanding natural beauty, surrounded by small villages and conservation areas with a lot of cultural heritage and listed buildings, " he said.

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