Originally Posted by
phiggsbroadband
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If size really matters, some counties have some very small, stone walled fields (Yorkshire, Scotland etc.) Whereas Linolnshire and that flat Southern area has some very large 60+ acre flat fields.
Rather a gross generalisation. There are a lot of large flat fields in some parts of Scotland and Yorkshire, and plenty of places (Cotswolds, Chilterns for example) in England where finding a decent field is almost impossible. The only way to be sure there will be large fields is to plan the flight that way, with the help of OS maps and Google Earth.