The latest survey of users shows overall satisfaction fell to 77% in the April-June quarter, down three points on the same period last year and the lowest score to date.
London Assembly members are to examine whether sponsorship of transport services such as the bike hire scheme and cable car delivers value for money to the taxpayer.
London’s cable car enjoyed its best passenger numbers in 8 months last week, with the total number of riders more than doubling compared to the previous week.
Transport bosses are hoping to boost passenger numbers on the Mayor’s flagship cable car by offering local residents cut price trips for the rest of the year.
Official Transport for London figures show that fares income from the Thames cable car in the second quarter of 2013/14 was 35% lower than expected. TfL had projected £8.3m in fare revenue in the period but, according to data supplied to London Assembly Member Darren Johnson AM, actual take was just £5.4m.