Yes, you can. Personal pensions are designed for you to manage. You control what you invest in and how much. SIPPs are a type of personal pension that give you the most control. With workplace pensions, you often have more control than you think. While your employer will set the workplace pension up, you might be able to increase your contributions if you’d like to and you should be able to choose what your pension is invested in. To find more about both of these a good place is your employer or pension provider directly.