Hotpoint AQXXD169 not spinning with a load

Hi All
My 3-year old Hotpoint AQXXD169PM decided to stop spinning today – I’m not particularly impressed as it’s never been subjected to what I would call ‘hard use’ and never been overloaded (which admitedly would be hard to do on one of these machines).
For half its life there were only 2 of us using it, and now I’m divorced I have been the only user for the past year and a half.
On average, about 2 or 3 washes per week I would say.

When it reaches the spin cycle, the drum continues to rotate slowly and the pump continues to operate as it should. There is no water left in the drum, so the pumping seems to be fine. However, the drum does not gather speed. I have tried various cycles.
When I remove all items from the drum and run a cycle it does spin as normal, so any sort of load is preventing it from doing so. I have removed the items then just put a bed sheet back into the drum, but still it doesn’t spin.

Do any of you experts have any clues for me please, as I’m fairly handy when it comes to taking things apart? However, I don’t really understand all the sensor modules on the newer machines (if that’s the cause).

Many thanks in advance.

Al