My impression from reading the comments here is that warm water is not to be used for de-icing and that Cat 1 aircraft de-icing fluid should be used. This of course raises the issue of where this fluid can be bought retail in the UK. I had a look at the usual suspects – Transair, Adam’s The Flying Shop, Harry Mendelssohn and AFE – but no sign of de-icing fluid in their on-line catalogues. Anyone able to recommend a few favourite pilot supply shops that retail de-icing fluid?