M&S has a policy of not approaching customers browsing.
So why did he approach a lone teen in the lingerie department when he worked in a different floor in a different department?
If he was regularly approaching customers in his own department then why had no manager spotted it and stopped him approaching customers as per company policy?
If he didn't regularly approach customers, then that asked even bigger questions about why he chose to approach a lone teen in the lingerie department of all places?
It's inappropriate for a man to approach a lone teen and ask if she needed help in the lingerie section because the only way the conversation can go is about details of her underwear if she engages. This is not ok.
In every safeguarding situation it's not ok.
Safeguarding teaches people not to put themselves into risky situations where they could be accused even if someone is acting innocently. If you do you fail safeguarding.
Why?
Because any such engagement can't be allowed because if you let one person off because they 'are a good person' it makes it harder to deal with people who aren't so innocent because of blurred boundaries. This we make boundaries clear so that everyone knows what is acceptable and what is not acceptable.
There are numerous safeguarding fails in this situation.