That is very dangerous forcing bicycle and scooters/bikes to drive in the gutter.
When I used to ride a MB in London I did not hug the gutter that's asking to hit a grate or debris - I rode in the lane 1-2 feet from the kerb just like your supposed to.
oh and I didn't not undertake other vehicles that's just asking to be killed (90%) of bile deaths are undertaking related in London