Apologies for asking so much on this lately!
But yesterday I had a call with our allocated social worker, just to arrange our teams meeting for next week and a small intro.
And I don't know what it is but he doesn't seem like someone I want to go through this process with: the other social workers we have spoken to so far have been really reassuring and friendly, he sounds very stand offish and a bit cold 
I'm going to have our face to face (well video call) and see if he is more reassuring on video but if not would we seem like hard work by requesting a change - I just don't want to go further down the road if I just know it's not going to work out.