Lib Dem London Assembly member Caroline Pidgeon recently tabled this question to the Mayor of London:

I have been contacted by many constituents concerned that bus services using Jamaica Road – such as the 188 and 47 – are being severely disrupted due to congestion during peak periods. What does TfL plan to do to mitigate this situation for passengers?

This week Boris Johnson replied:

Route 47’s reliability has been affected by roadworks in Lewisham and at Ludgate, Aldgate and Cannon Street in the City. To mitigate, the service is temporarily curtailed to Liverpool Street from Shoreditch. Additionally, a new schedule with additional buses and drivers will be in operation from 14 March 2015. TfL will continue to closely monitor performance following these changes.

A new schedule was also implemented on route 188 on 10 January 2015. As part of the Roads Modernisation Plan it is planned to invest £200 million between now and 2023/24 to maintain and improve the reliability of journey times on key bus routes. TfL officers plan to commence a study of route 188 by the end of March to inform the development of additional bus priority from 2015/16 onwards.