One very minor success amongst all the other bits of aggravation.
We moved the sofa out of the lounge before the prolonged refurbishment and it involved three men and a lot of huffing and puffing to get it between rooms and through the hall.
I bought a boxed set of castors (two fixed, two swivel) from Lidl because they looked useful and they were.
An off cut from the shelving (well, I say off cut - in fact I trimmed an over size piece along the wrong axis but fortunately had some spare ply left) and some M6 roofing screws from Homebase and I had a nice squarish trolley board with big white wheels.
After a bit of juggling we (my Lady Wife and myself) had the sofa up ended and balanced on the trolley.
It was then remarkably simple to walk and juggle it through the door ways into the lounge.
Board is roughly 400 * 420 in 18mm ply.
I am now trying to think of other uses :-)
Moving large out door plant pots could be one of them.
Cheers
Dave R