Not only were delays in 2012/13 lowest on record, but the last year has also been the busiest for the capital's tubes. Transport for London says one of the contributing factors was the Olympics, boosting the number of journeys to one point two billion.
More top news
Rahman was ejected from his powerful job in April by an Election Commissioner after being accused of corrupt and illegal practices.
The service was due to start in September but there is no agreement on pay and conditions such as how many night shifts staff will work.
Would you know what to do if you needed help? Here's the official advice from the Foreign Office.