National Savings & Investments
National Savings & Investments (NS&I) is owned by the UK government, which means that it's one of the safest places to put your money.
It offers savings products such as regular savings accounts, Cash ISAs, income bonds, and also investment accounts too.
If you're looking for a single account to put more than £85,000 into then it's probably the safest place to turn. Deposits with NS&I are guaranteed by the Treasury, you don't need to worry about keeping under the Financial Services Compensation Scheme limit (currently £85,000) as you do with other brands.
NS&I also administrates Premium Bonds, in which you can hold up to £50,000 with the hopes of winning tax-free prizes of up to £1 million every month.