On Saturday, 23 July 2016 09:36:57 UTC+1, jim wrote:
When traffic comes along, (rarely as they avoid weekends & bank
hols) they turn off the mixer as necessary /on request, move
anything in the way, chat to and smile at the passersby.....

'Traffic' suggests this is on a public road of some type, whether highway or byway, in which case obstructing any part of the road would probably require council permission, a temporary traffic order, and signage and traffic control to comply with the streetworks regulations.

Whether the council will get round to doing anything ... the chaps might be better working on weekends and bank holidays when council officers tend not to be working.

Owain