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A418 between M40 spur/A40 and M40, Oxfordshire (Grid ref SP622050) A418 between M40 and A40, Oxfordshire (Grid ref SP630048) A418 between A329 and A40, Oxfordshire (Grid ref SP660053) A418 between A329 and Oxfordshire boundary, Oxfordshire (Grid ref SP692060) A418 between Buckinghamshire boundary and Buckinghamshire boundary, Buckinghamshire (Grid ref SP700066) A418 between Oxfordshire boundary and A4129, Oxfordshire (Grid ref SP705067) A418 between A4129 and Oxfordshire boundary, Oxfordshire (Grid ref SP707069) A418 between Buckinghamshire boundary and Coldharbour Way, Aylesbury, Buckinghamshire (Grid ref SP800123) A418 between Coldharbour Way and A41(T), Buckinghamshire (Grid ref SP811133) A418 between A41 / A413 and A4157, Buckinghamshire (Grid ref SP825143) A418 between A4157 and Rowsham Rd, Buckinghamshire (Grid ref SP835152) A418 between Rowsham Rd, Aylesbury and Buckinghamshire boundary, Buckinghamshire (Grid ref SP870209) A418 between Central Bedfordshire boundary and A505, Central Bedfordshire (Grid ref SP900238)