5. Liam Williams (Wales)
The speedster was not picked up by any of the Welsh regional professional academies, and hence aged 16 started working as a trainee scaffolder at Port Talbot Steelworks, whilst continuing to play in his spare. He was signed by Scarlets aged 20 and went onto become a star for club and country after making his Test debut in 2012. Now plays his club rugby at Saracens.