The Strictly head make-up artist, 47, put on a brave face as she was pictured arriving to Blackpool Tower ahead of the special on Saturday.
Lisa cut a casual figure in a black top and trousers which she paired with a chunky green scarf to keep away the winter chill.
The makeup artist carried a navy coat over her arm and swung a designer bag by Chloe presumably full of supplies.
Lisa is focusing on work after her split from Sky electrician James in August.
The father-of-two, 40, surprisingly ended their romance and moved out of her £4.5m home while she was working in Manchester.
In a shocking turn of events, insiders close to the former couple have told MailOnline their relationship has turned toxic over money, as Lisa claims she loaned him cash during their time together, but he’s resisting all approaches.
James’ alleged reluctance to pay Lisa has sparked her decision to bring in lawyers in order to retrieve the money she claims is owed, which amounts to six figures.
Lisa and James dated for three years and the electrician was her most serious relationship since her high-profile divorce from husband Ant McPartlin, in which she received a reported £31m payout.
They were first pictured together in 2020 on an outing to a London park and went on to enjoy numerous luxurious holidays, which Lisa documented on her Instagram page, along with many loved-up selfies.
James was working for a company installing electric doors when they met, having recently moved out of the £450,000 family home he shared with ex-wife Kirsty in Winchester, Hampshire.
But James, who was married to his former partner for five years, shocked Lisa by breaking up with her totally unannounced and moved his belongings out of her home when she was away.
A source told MailOnline at the time: ‘I don’t really know what has gone wrong. The two of them were only on a swanky holiday together in the Caribbean or somewhere about eight weeks ago.
‘He was with her one day, and he just wasn’t with her the next day. There was no inkling that anything was wrong.’
Despite the surprise split, friends told how the pair were initially on amicable terms but that is no longer the case, mainly in part to Lisa’s demands for her money back.
A friend of James said: ‘When Lisa gave him that money, he thought it was in good grace – he didn’t see it as a loan with strict conditions to pay it back by a certain time.
‘It’s all got rather messy and Lisa threatening him with legal action is obviously concerning given her financial power.’
James has been approached for comment.