HEMS - Regulations and saving life

[Heliport]

Presstransdown
You say

Civilian /Coastguard SAR is not constrained by any limits on operations other than the self imposed trade off between seriousness of situation/risk to third parties/aircrew/aircraft.
This applies to weather, performance or otherwise.

Are you saying that:

In practice the CAA don't question what civilian SAR pilots do when carrying out SAR ops,
or
Civvy SAR pilots are legally exempt from Rule 5 and legally exempt from being prosecuted for endangering an aircraft, people or property when carrying out SAR ops?

If you mean the second, it sounds reasonable but where is that written?