The amateur radio landscape changes. A new UK repeater opens (e.g., GB3XX), a DMR talkgroup is decommissioned, or Ofcom adjusts band edges (rare, but possible).
Quarterly maintenance routine:
Even experienced hams mess these up. Avoid these pitfalls: anytone 868 codeplug uk
You will see UK-based radio shops offering to program your radio for £15-£25. For a beginner who is overwhelmed, this is a valid option. However, you will learn nothing about how DMR works. When the repeater network changes (and it will), you will be unable to update the radio yourself. DIY is highly recommended. The amateur radio landscape changes