although most of the year the UK is subject to prevailing south westerlies, there are often notherly and westerly winds in the winter, so i wouldn't get too hung up on the tailwind/headwind issue.
@Stu_F started
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although most of the year the UK is subject to prevailing south westerlies, there are often notherly and westerly winds in the winter, so i wouldn't get too hung up on the tailwind/headwind issue.