By combining your pension funds and getting professional managed  funds they are more likely to improve your pension income, after all thats why you speak to a Pension adviser.  You can improve your overall retirement income potential.
Also, use our Pension Tracing Service and we will help you find the pensions and then you can utilise them for your retirement!
You can make further contributions, but you need to understand the tax implications and what the best way of making further contribution is.