No luck with finding any... so I am going down the washable cotton clothes (Ikea sells baby cloths at 4.50 for 10) and Milton solution...
Just annoying - as in extra work and washing machine use - but my goats (esp at this time of year) manage to get their udders quite dirty and I do need to clean before milking.
I could use waterbased wipes for humans, but that would become expensive very quickly.