Tickets / events cancelled or changed

Typical aim: Refund or alternative
Be specific: dates, times, order numbers, names, promises made, and the resolution you want.
We’ll reference:
Acts & laws: Consumer Rights Act 2015 (services); Consumer Contracts Regulations 2013 (where applicable)
Ombudsman/Regulator: Trading Standards (via local authority)
Guidance: https://www.gov.uk/consumer-protection-rights