Last season’s 1000 Guineas heroine Cachet is set to make her eagerly-anticipated return in the Japan Racing Association Sceptre Fillies’ Stakes at Doncaster on Sunday week.

George Boughey’s filly won the Nell Gwyn before returning to the Rowley Mile to claim Classic glory in early May and she was only narrowly denied in the French Guineas a fortnight later.

The Highclere Thoroughbred Racing-owned daughter of Aclaim was fifth in the Coronation Stakes at Royal Ascot the following month and has not been seen in competitive action since, but she is closing in on a comeback from her 15-month hiatus.

“Cachet is in full work, she’s going really well and she looks absolutely magnificent,” said Highclere’s managing director Harry Herbert.

“At the moment, touching wood everywhere, she’s on course to reappear in the Sceptre Stakes at Doncaster on the Sunday of the Leger meeting (September 17).

“She’s wonderful and she’s thriving at the moment. She’s had her setbacks, which she’s well and truly over – we haven’t seen her looking as well since she was in the parade ring before the Guineas.

“Now she’s a mature four-year-old she looks even better, so we’re really excited to see her back in action.”

Cachet holds a Group One entry in the Sun Chariot at Newmarket on October 7, but connections are not making any firm plans beyond her intended Doncaster return.

Herbert added: “We’ll take it one step at a time. She’s been off a long time and it’s not easy getting back to full race fitness after that time, but George is doing his best and she’s really pleasing him.”