Fiona Millar has denied that she is planning to stand as a Labour candidate for Hampstead and Kilburn when MP Glenda Jackson retires.

The Gospel Oak journalist, who is chairwoman of governors at William Ellis School, has refuted speculation that she has ambitions to be an MP for the area.

Ms Jackson revealed to the Ham&High last month that she will retire before the next general election, due in 2015.

“I will be almost 80 and, by then, it will be time for someone else to have a turn,” she said.

The news caused some commentators to speculate on whether Ms Millar, who is Alastair Campbell’s partner, would stand.

But she told the Ham&High: “I haven’t got any plans to stand.”

The government will announce in September the new parliamentary boundaries. It has argued that boundaries should be redrawn to equalise constituencies to about 75,000 voters – reducing the number of MPs from 650 to 600 and from 73 to 68 in London.

It could mean that St John’s Wood would be brought into a new Hampstead constituency at the expense of Kilburn – most of which would be absorbed into Brent South, says a report by Lewis Baston of Democratic Audit.

Westminster North could also be scrapped with wards making up St John’s Wood – Abbey Road, Church Street and Regent’s Park joining the new Hampstead constituency which could also include Gospel Oak.

Both Holborn and St Pancras and Hornsey and Wood Green would remain almost exactly the same.