Ongoing double yellow parking and pavement obstructions

For a long time now cars park here on double yellow lines, often also on the pavement causing a complete obstruction for people passing by. Not only is double yellow parking not allowed, but the pavement obstruction puts pedestrians at risk of oncoming traffic (with their view obscured via these double yellow cars/vans parked there) when walking in the road to pass these vehicles. No enforcement action has ever been taken.