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Former European 400m hurdles champion Rhys Williams has won his first race since serving a ban for failing a drugs test in July 2014.

The 31-year-old clocked a time of 53.45 seconds at the Welsh Athletics Regional Championships in Newport.

UK Anti-Doping found that Williams and fellow countryman Gareth Warburton had inadvertently taken a contaminated food supplement.

"It's been so tough but I'm glad it's behind me," Williams told 91�ȱ� Wales.

"It's made me more determined, more mentally strong and I hope to use that to my advantage."

The Welsh athlete's next race will be in Belgium on Wednesday and he has his sights on a place in the Great Britain team for August's World Championships.

Williams would have to finish in the top two in the British Championships on 5 July to be selected.

Saturday's meeting at Spytty Park in Newport was Williams' comeback following a four-month ban.

Both Williams and Warburton had to withdraw from the 2014 Commonwealth Games, where Williams was set to be co-captain of Wales' athletics team.

Williams was subsequently cleared of knowingly cheating, but still had to serve the ban.