The 160 odd page DFE document 'keeping children safe in education' does not contain a requirement to do SM checks during a recruitment process under its safer recruitment section.
www.gov.uk/government/publications/keeping-children-safe-in-education--2
Neither does the charity commission, which girl guides are governed by.
www.gov.uk/guidance/safeguarding-duties-for-charity-trustees
NSPCC also used to have guidance on their website and it ha s either disappeared or I can't find it. They do have safer recruitment online learning and I would hazard an educated guess that it doesn't include doing SM searches during a recruitment process.
I am not saying that this is right or wrong, I am just saying that it is the guidance that organisations such as GGs follow.
The argument that those arguing against usungvSM checks as part of safer recruitment, is that the lack of boundaries should have been picked up in interview. We will never know how the interview was conducted because it is internal.
I keep my own SM fairly locked down, but I think checking SM could become a really tricky part of the formal safer recruitment process with grey areas, I.e what is hateful and what isn't?
Clearly a person holding a gun in a girl guides uniform is not a grey area.