Speed Limits On British Roads

... because I am always forgetting the maximum speed on unmarked single carriageways and have to deduce it backwards from remembering that sometimes there are 50mph signs on them, so that 'no sign' must mean a higher speed than that, and it cannot be 70mph because that is for motorways - ergo is must be 60mph

from www.direct.gov.uk

Speed limits  Built-up areas * Single carriage-ways Dual carriage-ways  Motorways   Type of vehicle mph (km/h) mph (km/h) mph (km/h) mph (km/h)  Cars & motorcycles (including car-derived vans up to 2 tonnes maximum laden weight) 30 (48) 60 (96) 70 (112) 70 (112)  Cars towing caravans or trailers (including car-derived vans and motorcycles) 30 (48) 50 (80) 60 (96) 60 (96)   Buses, coaches and minibuses(not exceeding 12 metres in overall length) 30 (48) 50 (80)  60 (96) 70 (112)  Goods vehicles(not exceeding 7.5 tonnes maximum laden weight) 30 (48) 50 (80) 60 (96) 70 (112) **  Goods vehicles (exceeding 7.5 tonnes maximum laden weight) 30 (48) 40 (64) 50 (80) 60 (96) * The 30 mph limit usually applies to all traffic on all roads with street lighting unless signs show otherwise. ** 60 mph (96 km/h) if articulated or towing a trailer. Read more at www.direct.gov.uk