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A5 between Barnet boundary and A410, Barnet (Grid ref TQ180932) 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) A41 between M1 spur and Barnet boundary, Barnet (Grid ref TQ176942) A5 between Harrow boundary and A41, Harrow (Grid ref TQ173942) M1 between A41 and LA boundary, Barnet (Grid ref TQ175943) A410 between A4140 and A4140, Harrow (Grid ref TQ171923) U, Ashcombe Gardens, Barnet (Grid ref TQ191926) A41 between Hertfordshire boundary and A5183, Hertfordshire (Grid ref TQ175944) A41 between A1 and A410, Barnet (Grid ref TQ194928) A5 between A410 and A5100, Barnet (Grid ref TQ190919) M1 between Harrow boundary and Harrow boundary, Harrow (Grid ref TQ169946) A5183 between A41 and A411, Hertfordshire (Grid ref TQ176950) B461, Whitchurch Lane, Harrow (Grid ref TQ187913) A4140 between A410 and Harrow boundary, Harrow (Grid ref TQ160934) A5100 between A5 and A5109, Barnet (Grid ref TQ200924) A411 between A41(T) and A5183, Hertfordshire (Grid ref TQ170951) A5 between A5100 and A5109, Harrow (Grid ref TQ194914) U, Algar Close, Harrow (Grid ref TQ159921)