A10 road
| A10 road in the UK | |
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| Basic data | |
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| Start of the street: | London |
| End of street: | King's Lynn |
| Overall length: | 145.5 km (90.4 mi ) |
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| A10 near Hertford, looking south (photo 2007) | |
A10 road ( English for road A10 ), also known in sections as Great Cambridge Road and Old North Road , is a trunk road in England . It begins at London Bridge , heads north through London and the London suburb of Tottenham , past Enfield , crosses the M25 motorway at Junction 25 , passes Hoddesdon and Hertford in Hertfordshire , goes south of Buntingford from the four-lane to the two-lane expansion, crosses the A505 road in Royston and the M11 motorway south of Cambridge and continues north of Cambridge via the cathedral town of Ely and past Downham Market to King's Lynn on the Wash , where it ends.