The 1x60mins show, which is from recently-formed indie Woodcut Media, will focus on the royal princess as she goes through her second pregnancy.
It will explore her acute morning sickness, how she manages being a mother with being pregnant and which designers she will choose for maternity wear.
Journalists and figures closest to the Royal Family such as Katie Nichol, Andrew Morton, Dickie Arbiter and Diana’s ex-bodyguard, Ken Wharf contribute to the film.
Kate Middleton: Heir We Go Again! is produced by Cheryl Gibbs (A Royal Arrival, Prince George at One, William and Kate – Baby Makes Three) and executive produced by Derren Lawford, the former iPlayer and London Live executive who recently joined Woodcut.
“Kate and Woodcut Media are rising stars, and with this appealing young royals project we can get our new relationship off to a flying start,” said Paul Heaney, managing director, TCB Media Rights.
“With Kate Middleton and Prince William constantly in the public eye, this documentary will offer viewers a unique perspective on Kate’s journey as she deals with her second pregnancy, whilst looking after Prince George,” added Kate Beal, CEO & joint creative director, Woodcut Media.