On 26 August 2009, Kevin competed for the title of Fastest Man in Rugby League as part of a curtain raising competition at the Carnegie Floodlit Nines.

[11] On 21 May 2009 Kevin was loaned out to Championship side Widnes after failing to force his way into Warrington's first team squad under new coach Tony Smith.

Penny was released by Warrington at the end of 2010 and joined Wakefield Trinity Wildcats for 2011, but once again failed to make an impression and was loaned out to Widnes Vikings.

[13] Despite spending some time on loan at Swinton and North Wales Crusaders, Penny displayed good form for Warrington and established himself in the club's first team.

He played 23 matches and scored 16 tries in 2015, his best return since his début season, and signed a new two-year deal at the end of the year.