Career
A scrum-half, he has represented Wales at Under-18, Under-19 and at Under-20 level and was selected for the Wales Sevens squad in 2007. In which he competed in four tournaments, Adelaide Sevens, Wellington Sevens, Hong Kong Sevens and the San Diego Sevens. The same year he was selected for the Wales U19 World Cup squad traveling to Dubai.
After learning his trade with Ebbw Vale Reconstruction Finance Corporation whilst in the academy set-up.
Robert made his professional senior debut for the Newport Gwent Dragons in 2007, coming off the bench away to Munster. In May 2009 Lewis joined London Welsh and made a total of 80 appearances in three seasons.
In 2012 he played a major role in London Welsh winning the English Championship, beating Cornish Pirates in the final. In July 2012 he joined Cardiff Blues After one season, he rejoined London Welsh ahead of the 2013-2014 season.
Robert"s twin brother James Lewis is also a professional rugby union player.