returning personal possessions from abroad to my heirs in the UK using courier service

When I moved from the UK to Bosnia 25 years ago I took some personal possessions with me, including tableware (some silver, mostly plate, more of sentimental than financial value). I now want to return these to my heirs in the UK via courier, as I am 80 years old and would be unable to travel with the items myself. I have tried to find out from the HMRC website what the customs duty implications are but everything I found there assumes I will be bringing the items to the UK myself. Advice please! Thank you

Hi,
Guidance on tax and customs for goods sent from abroad is available on below link:
Tax and customs for goods sent from abroad
If goods are sent as an inheritance please see link below for possible relief:
Pay no import duties or VAT on inherited goods
Thank you.