A house in my street appears to be running an unregistered car washing business from their house. There are regularly cars parked on the pavement outside the house, there's wires draped across from their driveway to the car, they have a carousel full of washing equipment which blocks the pavement. I regularly have to go into the road to get the pushchair down the street, and I assume people in wheelchairs must face the same issue. Sometimes it's so congested pedestrians on foot can't even get past.
I've checked on the council's planning permission page and they haven't been granted (or even applied for) a change of purpose for the property. How can I flag this, and who should I flag it to? I've had a look on the council's site but I can't find anything obviously related. I did look at obstructions to right of way, but there doesn't seem to be one for roadside pavements other than where a skip is blocking access.
If they can do all of the car washing on their own driveway I don't really mind them having this business, I'm just fed up of having to go into the road with the pram whenever I want to leave the street.