Jones leaped 3.23m at the Vault Cardiff event in Wales that attracted most of the UK’s top jumpers, including Great Britain star Holly Bradshaw.
It was the fourth time since September Jones has set a new PB in a competition. Since last summer he has improved his best by 33cm and is currently ranked third in the UK at under-15 level.
Jones recently won bronze medal at the England Athletics Under-15 Championships in Sheffield.
Meanwhile, some of Jones’ City of Plymouth team-mates impressed at the Inter-Counties Championships held at Prestwold Hall at the weekend.
Molly Shorey, in her first year at under-13 level, came 40th for Devon in a closely-contested race, where Exeter’s national champion Scarlet Livingstone came second. Fellow City of Plymouth athlete Holly Reid, running for Cornwall, just missed out on a top 50 finish, coming 52nd. Team-mates Molly Gilbey (Cornwall) and Verity Tank (Devon) also earned county honours in that race, as did Tavistock’s Charlotte Walker.
In the under-13 boys’ race, City of Plymouth’s Thomas Jones came 43rd, just three seconds behind Devon’s top finisher Charlie Hague. Tavistock’s Ewan Dix was also part of the Devon team.
Erme Valley Harriers’ veteran Cleo Perry was the top performing Devon women at the event, finishing 108th in the 10k race, which was doubling up as the World Cross Country Championships trials.
Fellow Erme Valley athlete April Oakshott ran for Devon in the under-17 girls’ race, along with Tavistock’s Natasha Farrington, while Tavistock’s Bradley Stevens competed for Cornwall in the boys’ under-17 race.
Also earning county honours at the event were Tavistock’s Will Russell, Joe Dix and Tom Brew and City of Plymouth’s Oliver Woodmason.
This Saturday’s the region’s top young athletes will be competing at the English Schools’ Cross Country Championships at Temple Newsam in Leeds.
Mount Kelly College’s Oliver Smart will be one of Devon’s big hopes at the event. He will compete in the intermediate boys’ race, where Hele’s Ethan Phillipson is also part of the Devon team.
Mount Kelly’s Edward Smart and Tom Brew will be in Devon’s senior boys’ side, along with Devonport High’s Jamie Williams.
The Devon junior girls’ team includes Mount Kelly’s Amelia Riggott, Devonport High’s Emily Cornish and Ivybridge’s Kristyna Cade, while Mount Kelly’s Nicole Dunn, Ivybridge’s Seren English and Devonport’s Elyse Kedzior-MacDonough will run in the intermediate girls’ event in Leeds.
Plymouth College pair of Chloe Olford and Talia Sullivan will join Mount Kelly’s Natasha Farrington in Devon’s senior girls’ team.
The final Armada Winter 3k Series run takes place at Central Park on Wednesday. The run starts at 7pm, with registration at the Life Centre from 6.15pm.