Lindsey Russell hosts her own early breakfast radio show for Heart Radio, live on air from 04:00 to 06:30 every weekday and is also a stand-in for Amanda Holden on Heart Breakfast with Jamie Theakston. Lindsey is also Heart's dedicated entertainment correspondent, regularly interviewing A-List celebrities at junkets and red-carpet events, from films to the NTAs and sports events like Wimbledon, F1 & the Laver Cup. She previously hosted the overnight slot 01:00 to 06:00 every Saturday and Sunday as well as Bank Holiday specials. She also hosted the drivetime Queen's Platinum Jubilee celebration shows on Heart in June 2022. Other previous radio credits include stand-in host for the Adele Roberts show and co-host of the Cel Spellman show on BBC Radio 1, as well as frequent guest slots on BBC Radio 2.

Lindsey is now a regular reporter for The One Show and has presented segments for Morning Live on BBC One. She has previously presented BBC Bitesize, a CBBC/online study support resource for school-age pupils and has hosted the Young People's Book Prize Awards, as well as the Children's BAFTA 2022 and taken part in many Comic Relief and Children In Need challenges. She is also the winner of the highly coveted Best TV Presenter award at the Children's BAFTA 2019.

In 2025, Lindsey launched a foodie Instagram account with her husband, Fred Haig. Named @goodplates_, the account showcases the pair's culinary enthusiasm, offering a guide to the best food & drink spots in London and beyond.

Lindsey is a former Blue Peter presenter and landed “the best job in the world” in July 2013, beating 20,000 applicants in a BBC competition to become the 36th presenter of the long-running children's show; a role for which she earned her BAFTA. As part of the Blue Peter team Lindsey took part in a number of amazing new experiences and physical trials; in 2014 she completed the Swiss Army's Mountain Marathon and in 2015 she ran the London Marathon for BBC Children in Need. In February 2016, Lindsey embarked on a whole new adventure for Sport Relief, dubbed ‘The Wave Runner’. In a feat that has never been done before, she attempted to run 21.6 miles across the Irish Sea in a 3-metre inflatable ball (zorb), at the mercy of the British weather.

Lindsey left Blue Peter in July 2021, after eight years on the programme. During this time she interviewed many incredible personalities and had the honour of presenting Gold Blue Peter badges to the likes of Steven Spielberg, Sir Paul McCartney and the Duke and Duchess of Cambridge. Lindsey also frequently hosted live presentation for CBBC and narrated and hosted two series of Taking The Next Step; a talent show for fans of CBBC reality-style drama series The Next Step.

Her live experience makes her really popular for live work and has hosted huge awards shows and in-house corporate events for some of the biggest companies, including Google, Aston Martin, BAFTA, Lidl and Aardman.