Re: "This helps to ensure that ... data is kept safe and secure"
So what they're saying is: if it's stored in a cloud hosting provider in the UK, it's safe; if it's stored in a cloud hosting provider outside the UK, it isn't.
Except there is this thing called "The Internet" which connects all the clouds together.
No, what they are saying is that whilst it is stored in a cloud hosting provider in the UK it is subject to, and protected by UK law.
Whilst it is hosted outside the UK it is subject to, and protected by the laws of that country.