His first full season at London Road Stadium resulted in another promotion where the club won promotion to the Championship. On 13 April 2009, Lewis was made to face a penalty three times against Millwall in an unusual refereeing decision. After David Martin of Millwall was tripped and a penalty awarded against Peterborough, Lewis was twice judged by the assistant referee to have moved off his line before the ball had been struck by Gary Alexander – on both occasions Lewis saved the penalty. At the third attempt, Millwall replaced the unsuccessful Alexander with Martin, who scored and this time the penalty stood. Speaking on Sky Sports News after the event, ex-referee Dermot Gallagher commented that whilst the assistant was consistently working to the letter of the law, his decisions were harsh. However his first season in the Championship wasn't as much of a success which resulted in relegation back down to the third tier. Peterborough started off strongly and Lewis was first choice keeper nearly all the season, however after fracturing his kneecap (and playing a whole half with it fractured) against MK Dons in the play-off semi final, he was forced to miss the second leg and final through injury. Peterborough went on to win promotion, defeating Huddersfield 3–0 in style in the final. During his fifth season at Peterborough, Lewis was replaced as first choice keeper permanently by Paul Jones and only made 12 appearances. His last appearance for the club came on 14 February, in a 3–1 loss at Cardiff City. On 30 April, Lewis was released by the club at the end of his contract, with Cardiff City and Ipswich Town interested in signing him. Cardiff City On 25 May 2012, Lewis agreed a three-year deal at Welsh club Cardiff City, which would commence on 1 July, where he linked up with former Norwich City teammates, Malky Mackay (at the time manager of Cardiff) and David Marshall. He made his debut for the club on 14 August, in a League Cup defeat to Northampton Town, and a second appearance came in the FA Cup exit at Macclesfield Town in January. Following promotion to the Premier League, Lewis was named in the 25-man squad and made his league debut for the club in a 1–1 draw at Hull City. Blackpool (loan) On 5 August 2014 he joined Blackpool on a season-long loan. He made his debut