I'm attaching a terrible diagram to try and help explain this. When we bought our house the previous owners were partway through making improvements and at the front they had added a porch, and built a front wall with double gates for the drive. When they did this, they made the drive entry wider than it was before, but our house has a strip of grass along the front boundary as part of the pavement (ie it's not on our land) so there's a bit of grass that sticks out across our drive.
Hopefully that makes sense. The front garden is a total mess, and we want to redo it and block pave (we have a big back garden full of plants for wildlife). However, we don't want this bit of grass sticking out over our drive.
Additionally, the pavements here are wide, and the road not so, and as we are on a local bus route everyone parks on the pavement rather than the road. This has been the case for over ten years, before we moved here.
So. We would like to a) remove and tarmac the bit of grass that sticks out over our drive (in red on diagram), but we would also like to b) dig up and tarmac the whole grass strip (purple). Other neighbors have done similar in the distant past, as some bits are concrete now. This would improve the pavement for pedestrians (although they still have space to walk anyway), and wouldn't impact the environment as grass isn't great for insects and it gets strimmed by the council regularly anyway so nothing gets to seed.
However the grass is part of the pavement and is therefore council property. Other neighbours have extended their drives out to be level with the far edge of the grass ie into the pavement, and the council hasn't done anything, so we thought it might be ok, especially as we aren't going to extend our drive out of our property, just get rid of the grass strip which looks messy.
Anyway, this is long! I was wondering if we'd be ok to just do either of these things? Or if we might get in trouble? I'm worried that if we contact the council they'll say no to both and then we will always have a bit of grass in front of our driveway! What's the worst they could do if we just do it? Make us put the grass back? Or worse?