Thanks for your reply and suggestions. Yes, they were back in England by 1841 as the Census shows that they were in Paradise Row Chelsea. They were no longer in service. The head of the family was working as a "whitster" (a linen bleacher in a laundry, a skill he would have learned in Norfolk where his father was a linen weaver.)
Do you know if there were any special qualifiactions to allow you to have achild baptised in the British Embassy- I did contact them, incidentally but they do not have search facilities apparently and I would have to go there.
It is a good suggestion about the employers being in Paris only temporarily, I will think on that!
Thanks again. Anne