A HUNTINGDONSHIRE doctor will be one of the first to know the gender of the royal baby.

Marcus Setchell, of Hemingford Abbots, is part of the delivery team on standby for when the Duchess of ­Cambridge, Kate Windsor, goes into labour - expected to be later this week.

Mr Setchell, the Queen's ­gynaecologist from 1990-2008, is on-call for the ­delivery, which is set to be at the Lindo Wing of St Mary's Hospital, London.

It is also believed the 69-year-old delayed his retirement when he was asked to deliver the latest royal ­addition.

He previously delivered Sophie, ­Countess of Wessex's two children Lady Louise Windsor and James, Viscount Severn. He also performed Camilla, the Duchess of Cornwall's hysterectomy in 2007.

The gynaecologist trained at ­Cambridge University and St ­Bartholomew's Hospital, where he worked from 1975 to 2008.

Mr Setchell, right, was also a founder of The Portland Hospital, a private ­hospital for women and children, which opened 30 years ago.

He is reported to have joked he may come out of retirement to deliver the couple's babies in the future ... but because of the royal connection has to keep mum about his latest job.