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M1 between A41 and LA boundary, Barnet (Grid ref TQ175943) A41 between Hertfordshire boundary and A5183, Hertfordshire (Grid ref TQ175944) A41 between M1 spur and Barnet boundary, Barnet (Grid ref TQ176942) A5 between Harrow boundary and A41, Harrow (Grid ref TQ173942) M1 between Harrow boundary and Harrow boundary, Harrow (Grid ref TQ169946) A5183 between A41 and A411, Hertfordshire (Grid ref TQ176950) A411 between A41(T) and A5183, Hertfordshire (Grid ref TQ170951) A5 between Barnet boundary and A410, Barnet (Grid ref TQ180932) A41 between A5183 / A5 and A411, Hertfordshire (Grid ref TQ164950) A41 between A410 and M1 spur, Barnet (Grid ref TQ184933) A410 between A4140 and A5, Harrow (Grid ref TQ180927) A410 between A5 and A41, Barnet (Grid ref TQ185930) A411 between A409 and A41(T), Hertfordshire (Grid ref TQ160950) A4140 between A410 and Harrow boundary, Harrow (Grid ref TQ160934) A409 between Hertfordshire boundary and A411, Hertfordshire (Grid ref TQ156945) A410 between A4140 and A4140, Harrow (Grid ref TQ171923) A409 between A4140 and Harrow boundary, Harrow (Grid ref TQ154940) U, Ashcombe Gardens, Barnet (Grid ref TQ191926) C, Aldenham Road, Hertfordshire (Grid ref TQ165965) A41 between A1 and A410, Barnet (Grid ref TQ194928)