Olympic champion Dame Jessica Ennis-Hill will add a bit of stardust to this year's ukactive Summit.

Ennis-Hill will attend the Summit and take part in conversation on stage, offering delegates insight into her career story and charting the way physical activity changed her life – taking her from elite athlete to a creator of her own fitness brand, Jennis.

She is one of three additions to the lineup of speakers at the event, which will be held at the Queen Elizabeth II Centre at Westminster on 31 October.

The other two new speakers are Sport England CEO Tim Hollingsworth and consumer specialist Kate Hardcastle.

Hollingsworth's keynote will anchor a special strand at the event, exploring the impact of ‘place’ on physical activity. His speech will include an insight into the approach Sport England will take to develop its next strategy.

Retail expert Kate Hardcastle, meanwhile, will deliver a session on how the physical activity sector can better reach consumers on our high streets and support its regeneration.

Commenting on her involvement, Ennis-Hill said: "I look forward to sharing my experience with delegates. I’ll be discussing my career, including my achievements and the challenges of getting back into elite competition post-childbirth.

“Since retiring from competing, I am now looking to inspire expectant and new mums to continue their fitness journeys, and I’m looking forward to sharing my personal story at the Summit in October."

Other keynote speakers to have earlier been confirmed for the summit include former Cabinet Secretary Lord Gus O’Donnell and professor Helen Stokes-Lampard, the chair of the Royal College of General Practitioners (RCGP).

The keynotes will be at the heart of the summit's agenda, which will this year explore the future of public health, the workplace and the high street.

The theme for the event is "The Backbone of a Modern Britain", positioning physical activity – and the sectors that deliver it – as critical to the future health, wellbeing and prosperity of the nation.

For more information on the ukactive Summit, click here.