Thank you very much. I mentioned this in my introduction post but will again here for anybody seeing this.
Both dogs are rescue animals (shelter dogs I beleive you call them in the US?)
We have had the Springer Spaniel, Lady, for about a year - she is 3 years old.
We have had the Foxhound, Billy, since January this year - he is approximately 5.5/6 years old.
He absolutely hates other dogs - but loves Lady to pieces, which is strange but good!