You are right jaykay, I did state that they had fleas.
But as I mentioned I was in a quandary as no one had a recommendation for treatment that was permissible while Faith is feeding. The vetinary chemist recommended Nettex Louse Powder which is off licence for use on goats or to use on the animals themselves, however they assured me it was safe and the problem was becoming horrid, we were itching, with just the thought, they were itching and all the other animals had been treated.
So I used it gingerly as a talc on them both on Saturday. Much improved and nearly clear, I'm sure the few left are dead fleas that haven't dropped out yet and it should last about 6 weeks. My heart was in my mouth for the last 2 days though!