This Morning's Alison Hammond shared a joke with Rishi Sunak's wife Akshata Murty on the show today as the politician's partner revealed it is 'exhausting' having him at home all the time.

The former Prime Minister and his wife were on the show to promote their new charity designed to make Maths less intimidating, named The Richmond Project.

When asked to tell viewers about it, Ms Murty chimed in and said 'I'll start', prompting co-presenter Dermot O'Leary to quip: 'I love the way you said that, it was like a discussion.'

Hammond then joked: 'We know who's in charge!'

Speaking about how their lives have changed since Sunak stopped being Prime Minister, Ms Murty said: 'I've been lucky to have him home more. 

'Certainly more sleep. The girls are thrilled to have him home most of the time. The dog is happy to go on walks. 

'Rishi has this great energy and intensity and he brought that to the job in number 10, and now he brings [it] home and it's great most of the time but it's exhausting because we just can't keep up with all of the various things that he wants to do and explore.

'But it's lovely because we get to spend more time together. We get to be at home up in Yorkshire together more and we just have some time to think and reflect.'

Addressing the sudden transition from being busy as Prime Minister to suddenly having comparatively little to do, Sunak said: 'I think I channeled that energy as Akshata said into home, which was not always a great success.

'After all there's only so many times you can resort out all the cupboards and get involved with the girls' skincare routine.'

He added that he misses the 'short commute' of No.10 which saw him simply walk down a single flight of stairs to his office, but continued: 'But then I thought, that's great, because I can take the kids to school and they'll be so excited.

'We can spend quality time [together]. Very quickly it was clear that they were not interested in having me drop them off at school.'

It was a far more relaxed interview than many of Sunak's media appearances as Prime Minister, with the couple describing how they wanted the charity, named after their hometown in North Yorkshire, to make Maths accessible for all.

'We want to break down barriers to numeracy and we want to build confidence in numbers,' Ms Murty said. 

Sunak described struggling with numeracy when he served as Chancellor of the Exchequer under Boris Johnson.

'People saw me as chancellor and assume okay you you are you must be good with numbers but for me actually mental arithmetic I actually find quite challenging.'

He continued: 'Even if people saw me in that job and assume oh, numbers are your thing, even I have thought mental arithmetic has given me anxiety over the years.' 

Later in the programme, the couple took part in a game of Mr and Mrs which saw Hammond and O'Leary read out statements which the married couple then had to say who they thought best matched. 

They revealed Sunak was the first to tell Ms Murty he loved her, and that their favourite takeaway is a Nando's.  

The couple first unveiled their charity in March of this year.