Burger King Walthamstow has a special area where mopeds / scooters can park that is free of charge and restrictions!
Here is how you find it:
Enter into the delivery area
Follow signs for Service Yard 2
Then follow the signs for the exit from the service area, but just before the exit turn right and head to the end, up to number 5
Enter via either brown door and BK will be only a few steps away
Here are pictures to show the route: