SOUTHAMPTON triathlete Lucy Phillips, 12, is UK number one in her age group.

Lucy, from Shirley, went top of the rankings after winning the National Inter-Regional Triathlon Championships at Mallory Park race circuit, Leicestershire.

She beat the top three from each region to cap an amazing season, in which she won all but one race to win the South Central series and secure a spot in the championships.  

Lucy, a member of Chapel Tri Junior Triathlon Club, came out of the 200m swim in 12th place but overtook eight rivals on the 6k bike race before securing her win by passing the top three in the 1.25k  run.

The South Central region were also the winning team for the mixed relays on Sunday in which Lucy competed.