This is the official announcement from "Transport for London":
Potential 24-hour bus strikes
The Unite union have called two 24-hour strikes on London United bus services. If the strikes go ahead, they will be on the following dates:
• On Friday 19 September, from 00:01 until 23:59. Night bus services in the early hours of Saturday will also be affected; daytime buses on Saturday are then expected to run as normal
• On Monday 22 September, from 00:01 until 23:59. Night bus services in the early hours of Tuesday morning will also be affected; daytime buses on Tuesday are then expected to run as normal
Buses are expected to be affected as follows:
• Bus services in south west London operated by London United are expected to be severely disrupted and some services may not run
• Some bus routes into central London, including the 9/N9, 10, 94, 148 and C1 are expected to be affected
Tube, DLR, London Overground and London Tramlink will operate normally but will be busier than usual. You may wish to consider cycling, if possible; walking may be an option for shorter journeys.
For more information, please click here