Thanks all for all of your kind replies. We were going to look at a Mercedes S class 500, but I understand that you cannot tow them on an A Frame, so we will have to consider something else

I am hopeful that we will have a new little addition later today and it seems that I have the A Frame sorted out now (brand new and fitted for under £500, can't be bad.....). Once again, many thanks for taking the time to respond

Keith