Gomo have one for 9.99, 30 day contract. I saw it here first and they has been a lot of TV and radio adverts. Don't think there is
I'm on Tesco for 15 a month, 30 day contract Very happy with it.
You could just buy a cheap phone and top up as needed. Sorry I'm assuming that still exists.
I have work phone and personal. I thought I'd only use personal very little, but it got confusing so I'm happy to pay 15 a month. I bundle the data and only use work phone for work.
I can Google to my hearts content and if there is ever a GDPR I am happy that I can hand work phone over.
I do all my moaning about management on personal phone