Hello SE23 - I'm new to the area and the forum!
I just thought I'd bring it to people's attention that there appears to be a large amount of Japanese Knotweed growing in the grounds of Siddons Car & Van Hire at the bottom of Siddons Road / Perry Vale. They use the grounds as their car park and the vehicles are in and out daily, this itself can cause the spread of this harmful and invasive weed. I live locally to the site and have written to the council as it is a concern how close and wildly it is growing to so many houses.
From what I understand, it is not illegal to have it on your property, however, you can be prosecuted for allowing it to spread on to other people's properties.
I'm posting this in the hope that other concerned neighbours complain about this site in the hope that it is suitably maintained as it currently appears to be growing rampantly.
Sorry if this is a bit of a rant.