Royal Mail postal loss/delay complaint

Typical aim: Compensation or refund
Be specific: dates, times, order numbers, names, promises made, and the resolution you want.
We’ll reference:
Acts & laws: Postal Services Act 2011; Ofcom postal regulation
Ombudsman/Regulator: Royal Mail (scheme) → Ofcom (regulator)
Guidance: https://www.royalmail.com/help/complaints ; https://www.ofcom.org.uk/postal-services