A number of changes to bus routes in South West London are coming into force this weekend (Saturday, December 12).

They will affect the following routes: 110, 117, 235, 306, 391, 490, 493 H22, H37 and R70.

Here's everything you need to know to plan your journey.

Route 110

This bus route, which currently runs between Hounslow and West Middlesex Hospital, will be diverted at Powder Mill Lane to run to Hammersmith Bus Station via Percy Road, Whitton, Warren Road, Twickenham Stadium, St Margarets Station and Richmond Bridge to Richmond Town Centre, then via the current 391 to Hammersmith Bus Station.

Buses will run non-stop between Twickenham Stadium and St Margarets Station in both directions while bus stops are installed along Chertsey Road.

Route 391 will be withdrawn from this date, while route H22 will be restructured to serve West Middlesex Hospital.

Monday to Friday the 110 will increase in frequency to run every 15 minutes during the AM peak, midday and PM peak periods. and every 20 minutes in the evening.

The Saturday service will be every 15 minutes during the day, and every 20 minutes in the evening.

Sundays will see buses running every 30 minutes in the early morning and then every 20 minutes for the rest of the day.

Route 117

The temporary timetable will be removed and the service will now run every 20 minutes during the AM peak, midday and PM peak periods on Monday to Fridays and during the daytime on Saturdays, and to every 30 minutes during the daytime on Sundays.

Route 235

The temporary timetable will be removed and the service will now run every 8 minutes during the AM peak, midday and PM peak periods on Monday to Fridays and during the daytime on Saturdays and to every 12 minutes during the daytime on Sundays.

Route 306

Route 306 will be operated by Metroline from this date with changes to times during the evening on all days of the week.

Route 391

This route will be withdrawn and replaced by the revised route 110 providing additional links to Twickenham Stadium, Whitton and Hounslow from Hammersmith, Kew and Richmond.

Route 110 will provide the same frequency of service as route 391 between Richmond and Hammersmith but with earlier and later buses in both directions on all days of the week.

Route 490

Route 490 will continue to run between Heathrow Terminal 5 and Richmond, Pools-in-the-Park.

A new timetable will be in operation on all days of the week with extra journeys added in the AM and PM peak periods on Monday to Fridays.

Route 493

Route 493 will be shortened to provide a more reliable daily service between St George's Hospital and Richmond Bus Station over its existing route.

The route runs via Wimbledon, Southfields, Putney Heath, Roehampton and East Sheen to Richmond Bus Station.

Route 371 will continue to provide the service between Richmond Bus Station, Richmond Station and the retail area around Richmond, Manor Circus.

There will be no change to the frequency of route 493.

Route H22

This bus route which currently runs between Hounslow and Richmond will be diverted in Twickenham Town Centre to West Middlesex Hospital via London Road, Isleworth and Twickenham Road, replacing route 110 over this section.

Route H22 will provide more buses per hour than the current route 110 between Twickenham, Isleworth and West Middlesex Hospital.

Routes 33, 490, R68 and R70 will continue to provide services between Twickenham and Richmond.

On Monday to Fridays the H22 will run every 12 minutes during the AM peak, midday and PM peak period, and every 20 minutes in the evening.

The Saturday service will be every 12 minutes during the day and 20 minutes in the evening.

Sundays will see buses running every 30 minutes in the early morning then every 20 minutes during the daytime and evening.

Route H37

Route H37 will continue to run between Hounslow, Blenheim Centre and Richmond, Manor Circus with a new timetable in operation on all days of the week.

On Monday to Friday the H37 will run every 7-8 minutes during the AM peak, midday and PM peak period and every 12 minutes in the evening.

The Saturday service will be every 7-8 minutes during the day and 12 minutes in the evening.

Sundays will see buses running every 20-30 minutes in the early morning then every 10 minutes during the daytime and 12 minutes in the evening.

Route R70

The temporary timetable will be removed.

The frequency of the service in the PM peak on Monday to Fridays will be restored to run every 10 minutes.