When it came to overall customer satisfaction levels, Heathrow Connect came in the top three at 94%. But the same operator saw a marked fall in its value for money rating - dropping 6% over the last year to 52%.
First Capital Connect (81%) and Southern (82%) were among the lowest-rated for overall satisfaction - at 81% and 82% respectively.
More top news
Labour has revealed the twelve London constituencies at the top of its general election hit list.
One of London's most iconic locations, Borough Market is marking its millennium with a year long celebration, starting this weekend.
YouTube superstar Alfie Deyes got a sense of how far he has come when thousands of fans descended on his latest book signing in London.