[mdjlucan]

loads of caterpillars on my Brussel sprout leaves but what can you I d then how do I get rid of them

[mumofstig]

Pick them all off and squash them. Next time cover them with fine netting or enviromesh.

[mdjlucan]

Will I still get my Brussels thanks

[mumofstig]

If the growing point is still there, then you should.

If they've eaten it away - then no 

[JoshP]

Pick them off or spray with thiacloprid

[Salmo]

Pick them off or spray with thiacloprid

The Soil Association say avoid using anything containing thiacloprid because it is one of the chemicals implicated in the bee numbers falling.

http://www.soilassociation.org/keepbritainbuzzing/householdpesticidesl

Edited to tidy up link