You are being asked to pay the relevant customs duty, excise duty and import VAT on your parcel. When an item is received from outside of the UK, it is automatically inspected by Border Force on behalf of HMRC for prohibited or restricted goods. They also check the customs declaration to determine if customs duty, excise duty and import VAT are chargeable.
If we receive a parcel from overseas, we will pay any customs duties and taxes on your behalf to HM Revenue & Customs. However, we will then require payment for this, together with our customs clearance fee, before the parcel can be delivered to you.
You can find more detailed information about these charges here
