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U, Penn Way, Hertfordshire (Grid ref TL230311) A6141 between A1(M) and Baldock Lane, Hertfordshire (Grid ref TL234310) A6141 between A1(M) and Weston Way, Hertfordshire (Grid ref TL237308) A6141 between Baldock Lane and A505, Hertfordshire (Grid ref TL228320) A505 between Stotwold Rd/Queenswood Drive and A6141, Hertfordshire (Grid ref TL223320) U, Quinn Way, Hertfordshire (Grid ref TL232322) A505 between A1(M) and Baldock Roundabout, Hertfordshire (Grid ref TL241312) U, Jackman's Place, Hertfordshire (Grid ref TL228324) C, Hertfordshire (Grid ref TL245305) C, Willian Road, Hertfordshire (Grid ref TL215304) A1 between J8 and J9, Hertfordshire (Grid ref TL230290) A1 between J9 and Hertfordshire boundary, Hertfordshire (Grid ref TL239330) A6141 between A505 and Weston Way, Hertfordshire (Grid ref TL247330) A505 between A6141 and A6141, Hertfordshire (Grid ref TL239335) U, Hertfordshire (Grid ref TL249331) C, Wilbury Road, Hertfordshire (Grid ref TL215336) U, Eastern Way, Hertfordshire (Grid ref TL221339) U, Grange Road, Hertfordshire (Grid ref TL217338) A505 between B656 and Stotwold Rd/Queenswood Drive, Hertfordshire (Grid ref TL200302) A507 between A505 and Wallington Rd, Hertfordshire (Grid ref TL250336)