There seems to be a lot of cabbage white fly around this year, possibly caused by the mild Autumn.

RHS site below gives some handy information!

http://www.rhs.org.uk/advice/profile...e_whitefly.asp

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My Majesty made for him a garden anew in order
to present to him vegetables and all beautiful flowers.- Offerings of Thutmose III to Amon-Ra (1500 BCE)