Surveyor who says Baldwin St may still be steepest in the world to appear on Judge Rinder

A surveyor determined to fight to the bitter end to put Dunedin's Baldwin St back on the "world's steepest" throne will appear on UK reality court show Judge Rinder.

The Dunedin landmark lost the coveted title in July, after Guinness World Records gave the honour to Ffordd Pen Llech, in the Welsh town of Harlech.

But surveyor Toby Stoff is disputing the methodology used by Guinness World Records, holding out hope that the street may one day be crowned the steepest once again.

He told Newshub on Wednesday he was approached by UK channel ITV to appear on the show, which will be recorded on November 5 in Manchester.

According to Guinness World Records, Ffordd Pen Llech has a gradient of 37.5 percent at its steepest point, compared to Baldwin St's 35.

But Stoff has said that way of measuring may make all the difference in determining which street was steepest.

"If nothing else appearing on the show will allow us to present our case to a wide audience," he told Newshub.

Stoff said he hoped appearing on the show would encourage Guinness to review its "steepness" criteria.

Baldwin St held the record for over a decade before losing the title. The challenge to its legacy began about a year ago, when Harlech resident Gwyn Headley contacted Guinness World Records, after becoming convinced his town's street was steeper.