Tracing service may provide the help you need!
If you think you may have an old pension but are not sure of the details, the Pension Tracing Service may be able to help. They will try and match the information you give them to one of the schemes on their database and inform you of the results. If they have made a match they will provide you with the contact address of the scheme(s) and you can get in touch with them to see if you have any pension benefits.