There must be loads more to this tale than meets the eye... For a start it's Crays Hill, the location of the largest Pikey camp anywhere. Pikeys who stick their noses into whatever is going on ... Then there's the canabis being grown in his shed, supposedly unknown to him although he rented out the shed to them... Then there's the shooting of the very people he rented the shed to... Then there's him being in need of a mobility scooter.
A sceptical person might say, for example, that the injured two were pikeys growning some canabis for the old guy to ease his condition a bit. But instead they didn't give him enough, fell out and so he shot he barstards. Probably the only straight-up character in the tale was the fox.