Well..you'll be happy to know that the saga of the bed is now over. The guys came back on Tuesday with a new base, conveniently in two pieces, that was easily transportable up the stairs.
We are now sleeping VERY soundly on our nice & comfortable bed.
Pity the king-sized sheets don't quite fit !! Well...they do. It's not really that bad but I think we need some slighty bigger sheets for them to fit properly.