With the promise of more regular first XIII rugby Sykes moved south to join the
London Broncos in a permanent deal in August 2002. Sykes soon settled back to life in the capital and representative honours were gained with an appearance for England "A" against New Zealand in October, followed by a place on the successful "A" team tour to Fiji and Tonga. Sykes has further earned England caps against Russia and Wales in 2003 and France and New Zealand in 2005. Sykes originally came to the club as full-back, but the arrival of club captain
Mark McLinden has seen Sykes operate largely in the centres in Super League X and XI. Sykes successfully converted during 2005 to the centre position where his powerful running and strong tackling are seen to their best advantage. Super League XI saw Sykes ruled out for much of the season after damaging his kidneys in February. However he made a comeback towards the end of the season after initially being ruled out for the entire campaign 2005 was a record breaking year for Sykes. On 27 February against the
Wakefield Trinity Wildcats, Sykes kicked 12 goals from 12 attempts to break a 17-year-old London club record. Further records for most goals and most points followed at the season's end and in recognition of these achievements Sykes was voted Supporters' Player-of-the-Year for 2005. Harlequins centre Sykes has confirmed his expected move to Bradford for next season on a two-year contract. Sykes, who made his Great Britain début earlier this season, left Bradford on loan in 2002 to find first-team rugby. Quins coach
Brian McDermott also paid tribute to Sykes' contribution at
the Stoop. ==Bradford and the Wakefield Trinity Wildcats==