C421

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C421 may refer to

Route	Highway Authority	Historic County	From	To	Length
C421	South Ayrshire	Ayrshire	Church Square	Coalpots Road	0.5 miles	View
C421	North East Lincolnshire Council	Lincolnshire	Brigsley	Fenby Top	1.7 miles	View
C421	Perth and Kinross	Perthshire	Alyth	Bridge of Dillavaird	2.3 miles	View
C421	Bath and North East Somerset	Somerset	Church Lane	Council Boundary	0.05 miles	View
C421	DfI Roads	County Fermanagh	Clabby	Ashbrooke	10.3 km	View
C421	Lincolnshire Council	Lincolnshire	Allington (C418)	Manthorpe (A607)	5.11 km	View
C421	Kent Council	Kent			1.43 km	View
C421	Northumberland	Northumberland	Clayport Bank, Alnwick	Bondgate Without, Alnwick	0.5 miles	View
C421	North Yorkshire	Yorkshire	Easingwold North Roundabout (A19)	Easingwold South Roundabout (A19)	5.0 km	View

Key

Class III Route

Defunct Route

Future Class III

Unbuilt Class III