Wheelchair on the road

[E-Type67]

Driving along a busy B road approaching a junction for the A3 around a mile away ahead. On the opposite side of the road is a very elderly gentleman in a wheelchair going along the road. Not a motorised wheelchair or mobility scooter but a regular push wheelchair and please note no pavement, he's in the road. Behind him was a queue of traffic backed up. Couple of huge articulated lorries and maybe a couple of dozen assorted vehicles.
To me he looked in extreme danger, I wondered whether he'd discharged himself from a care home so called it in. I was surprised when the Police asked if he was driving the wheelchair irresponsibly, he wasn't. I explained that he looked as though he was in a very dangerous position but was told it wasn't a Police matter as he was entitled to use the road "just like a cyclist". In the end I apologised if I'd wasted Police time but remain surprised.
Opinions?

[cmaguire]

Apparently my 80 year old uncle who has dementia has recently taken to exposing himself to his neighbours, asking them if they like his body, which is highly doubtful under any circumstances.
I just hope I'm not him in 35 years time, although I don't suppose either him or your friend in the wheelchair are ultimately anything other than amusing in the grand scheme of things.

[voyds9]

E-Type67 said:

I explained that he looked as though he was in a very dangerous position but was told it wasn't a Police matter as he was entitled to use the road "just like a cyclist".
Opinions?

When has legally entitled every stopped a policeman having a word if they wanted.

To demonstrate this just try videoing your local police station, they will soon be out to have a word about your legal activity.

https://www.youtube.com/watch?v=L98qXR7fX18

And at a TV studio

https://www.youtube.com/watch?v=5te50Vnd-10