has reportedly left her talent management agency after they signed Reggie Yates.
The pair have fallen out, it has been claimed, over a previous incident which is thought to have now led to her leaving MC Saatchi.
Lisa, 54, reportedly spoke to the agency after learning late last year that presenter Reggie, 42, would be joining them.
The Sun reports that after expressing her feelings to them, MC Saatchi chose to sign him anyway so she decided to leave.
The pair co-presented the music show Top of the Pops together between 2004 and 2005.
They also co-hosted The Big C Fundraising Concert on the BBC in 2004. It has not been reported what the alleged 'incident' was or when it took place.
Lisa Snowdon has reportedly left her talent management agency after they signed Reggie Yates (seen in 2004 together)
The pair have fallen out, it has been claimed, over a previous incident which is thought to have led to her leaving MC Saatchi
A source told the publication: 'It was an unusual situation to unfold, but Lisa took a stance and made a decision to leave MC Saatchi once she learned Reggie was joining.
'It was all quite unfortunate, but has been the talk of the office.
'It seems unusual for bosses to let one of their loyal clients walk away. Reggie appears to be unaware of the drama his arrival has caused.'
MC Saatchi and representatives for Reggie and Lisa have been contacted by the Daily Mail for comment.
Lisa is now currently only listed with a US agent and is yet to appoint new management in the UK.
It comes after last month This Morning star Lisa revealed she was left 'unable to walk' after a horrifying battle with meningitis that saw her rushed to hospital.
The TV presenter, who regularly hosts the fashion segments on the show, joined hosts and to speak about her experience.
Lisa explained she came down with the infection, which affects the protective membranes that surround the brain and spinal cord, more than a decade ago.
Suffering from headaches, a stiff neck and a high fever, the star had put her symptoms down to exhaustion - overlooking them for almost a month.
When she finally went to hospital, Lisa was diagnosed with viral meningitis, leaving her close to death and her parents told to 'say their goodbyes'.
Lisa told Ben and Alison: 'I remember it so clearly, it was October 2010, it was dark, it was cold, and I was feeling really run down which you do at that time of year.
'But I remember this crippling headache that was just blinding, and I stupidly just kept battling on, I kept taking different painkillers, I was still working at the radio station.
'Then I kept getting fevers, I would wake up and the bed covers would be soaking wet and the headache kept me awake at night - and the stiff neck really was a concern, it felt like I'd pulled my neck because it was just so stiff.
'My hands, my feet and my fingers were always so cold, but I stupidly just kept going and I was so tired... and then towards the end, the lights started to become quite blinding in the studio and that's another sign of meningitis.
'I felt like I had nothing left in the tank, and then I couldn't walk, I was just absolutely broken, and then I was in the hospital...'
Lisa, 54, reportedly spoke to the agency after learning late last year that presenter Reggie, 42, would be joining them
Lisa continued of her struggle to be diagnosed: 'We think of meningitis as something that affects very young people, toddlers and children, but it can strike anybody.
'The doctors didn't know, and there were complications with my viral meningitis because I had left it so long, I also had glandular fever, so it wasn't until they did a scan and they say the swelling in my brain, that's when they [knew].'
The severity of Lisa's illness meant that doctors warned her parents they might have to 'say their goodbyes' to her, adding: 'The doctors didn't know, they were doing all sorts of tests and scans...
'They told my parents, "We don't know what is wrong with your daughter, you need to come and say your goodbyes" - and I was so out of it, I couldn't do [anything].
'I was just lying there, I was barely conscious.'
There were lasting affects for Lisa, too, who added: 'For a few years I found it really hard to concentrate, I still get very, very tired... I also get bad headaches.
'There are lots of long-term, not very nice to live with [affects] but I was very lucky because I walked out of that hospital and some people don't.'
Raising awareness as president of Meningitis Now, Lisa is planning on trekking the Sahara Desert alongside others who have been affected by the virus.
She concluded: 'It's going to be a life-changing trek to help raise money.'
