I spent some times in America in November but unfortunately, because of some logistical troubles (involving a forgetful friend), I had to leave without my main luggage. I'm hoping to get reunited with it soon, as my friend is going to ship it over here to the UK. However, it just dawned on me that as a parcel from abroad its contents and value will probably need to be declared to customs. I really don't want to pay duties and taxes on the stuff that is and was mine - and it could potentially add up as the suitcase has some outdoors equipment inside, on top of a assortment of clothes and a couple souvenirs.
Firstly, is declaring a package with an assortment of personal possessions as just "personal possessions" or "luggage return" a thing? Secondly, if not, is this kind of situation something where import duties and tax normally applies? Once again, the stuff in the parcel is all already used by me and originally purchased before my trip (though I no longer have the receipts).