Reduced state pension voluntary payments if working overseas

Hi, I have been working in Switzerland for the past 7 years on a local contract, paying Swiss tax and paying into the Swiss state pension system.
As a result, to top my UK state pension do I need to pay the full annual payment or are annual payments reduced due to the reciprocal agreement between Switzerland and the UK?
Thanks in advance

Hi SwissTony25
Please see the guidance at Voluntary National Insurance: Overview.
If you have any queries relating to this please the use the contact details at National Insurance: general enquiries.
Thank you.