Instructions:Enter code at checkout. I sent a 3 Kg parcel of books via UPS (self-drop-off and collection at pick-up points) on an overnight service with £50 insurance for.... 63p! (£5.63 - £5 code). Go through Quidco for 3% cashback - mine tracked for full amount ie nearly 20p!! It all helps.
Thanks to MSE for code, "we blagged £5 off your first order with discount courier service Parcel Hero if you enter the code MSE5 at the checkout. There's no minimum spend so for a £5 delivery you'll pay nothing".