When you were an active member of the Scheme, you had the opportunity to pay extra into your pension, in the form of additional contributions (sometimes called AVCs or APCs).
The legacy AVCs available will have depended on the section of the Scheme you were a member of.
If you paid AVCs, you will be able to see details of these when you log into your account. However, if you paid into the Eagle Star Tier VCPs you will need to contact zpenteam@uk.zurich.com for more information.