A pension is a long-term investment. Its value can go down as well as up and could be worth less than was paid in. Laws and tax rules may change in the future. Your own circumstances and where you live in the UK will also have an impact on tax treatment.
Transferring other pension plans will not be right for everyone. You need to consider all the facts and decide if it’s right for you. You could lose money by giving up any valuable guarantees or benefits you might get from your other pension plans. There is no guarantee that you will get more as a result of transferring.