If you’ve been a member of a defined contribution pension scheme, such as a workplace or personal pension scheme, and you stop contributions, the value that you've built up in your pension pot can remain invested until you decide to start taking money from your pension.
You usually have the option to change your investments at any time.
Check with your pension provider what charges may apply as these can have a significant effect, especially if the value of your pot is small.
You might also be able to continue making contributions to the pension, depending on the type of pension you have. Ask your pension provider/administrator who will be able to confirm what is possible.
You'll usually also have the option to move your pension to another pension. For example, you might decide to bring your pension with you to your new workplace pension if you're changing jobs. This can help you keep track of your pensions more easily.