Dear *****. ...I have made absolutely sure the door is firmly shut [it does seem secure] and it doesn't appear to need a new interlock.
Now I have set the machine to wash some cottons on 90..plus 1000 on the spin. I'll see what happens in a couple of hours and report back to you.
I had rather thought it would be something to do with the control switch...can this be located in the wrong place...because it is easily pulled out? Thanks....James