mogs, I am not being funny, but you could google 'keeping insects off brassicas', some of the answers I came up with quickly were: covering with fleece as you mention, planting through aluminium foil, filling yellow pans with water and planting aromatic plants nearby.
There is quite a lot of info there.....the RHS site also may be worth exploring
We have tons of birds, some very pretty ones but so far I've not seen one pigeon in the garden. Plenty of magpies, I suppose they probably do the same damage.
Thanks for your helpful advice. I did google beforehand RH, but thought I'd ask some of the forum experts what they thought too, the gardening section is usually very informative. Sorry if you felt I was asking a stupid question.
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