ALLOA'S Duncan Scott lit up Sheffield on the third night of the British Swimming Championships by smashing the UK record in the 100 metres freestyle to strike gold.

The 19-year-old, fifth in the event at last summer's Olympic Games in Rio, became the first Briton ever to go under the 48-second barrier as he blitzed clear of the field to win in 47.90, automatically securing his place in the team for July's world championships in Budapest.

As reported by our sister paper The Herald, his time vaulted the Stirling University prospect to the head of the world rankings.

"I'm delighted with that," said Scott, who will race next in today's 100m butterfly.

Max Litchfield was also in recordbreaking form at Ponds Forge as he swept to victory in the 400m individual medley in 4:10.63, breaking Dan Wallace's existing British mark.

But Mark Szaranek, freshly returned to his new base in Edinburgh after four years at the University of Florida, slashed over two seconds off his lifetime best to take silver in 4:15.51.

The 21-year-old has confirmed his place for the vacant slot in Scotland's 4x200 relay squad.

Stirling's Callum Lawrie pushed his case for a spot at the world junior championships by winning the Target Tokyo 400IM final in a personal best.

While Lucy Hope of Edinburgh University scooped bronze in the 50m freestyle as Anna Hopkin claimed her first British title ahead of Olympian Siobhan-Marie O'Connor.

However Stephen Milne struggled to a disappointing third place in the 1500m freestyle final.

Keanna Macinnes and Hannah Miley were fourth and fifth in the 200 fly.