There are three kinds of invalid carriage according to highway regulations.

Manual wheelchairs are designated Class 1, whereas the Class 2 category encompasses all powered wheelchairs and scooters that are used on the pavement, to a maximum speed of 4mph. These may not be used on the road itself except on pedestrian and zebra crossings. 

For a list of recommended mobility scooters suppliers click here.

Class 3 denotes powered chairs and scooters for use on the road, to a maximum speed of 8mph. Since they are used on the road, they are required to have indicators, hazard lights, front and rear lights, a horn and rear view mirror.  They are not, however, classified as motor vehicles so do not need to be taxed and insured (though insurance is advisable). Furthermore, a driving licence is not needed to operate one. 

Mobility scooters are not permitted on motorways, cycle lanes or bus lanes.

For a list of recommended mobility scooters suppliers click here.