I still wonder if there was something in the work call that caused a problem. Financial products (MOO) tend to be target driven. As I was typing this, I had another brainwave and did some googling. Here are the results and the source.
What is a standard DBS check?
A standard DBS check for a mortgage advisor will require a search to verify if you have any
unspent or spent convictions, cautions, reprimands or warnings in existence on the
Police National Computer.
Without the search, you will not be able to complete your registration with the FCA. A standard DBS check for a mortgage advisor can only be requested by your employer.
Source :
DBS Check Mortgage Advisor | Mortgage Advisor DBS Check | DBS & CRB Check for Mortgage Advisors.
Then I checked how often a DBS should be done. The answer is that it's recommended evry three years
Source :
Finance Sector DBS Checks - Basic, Standard & Advanced Checks.
As LE have said, the incident from the 10th of January was still under investigation. The thought of losing a major source of income might be enough to also be someone's "last straw". Potentially enough when added to pressure from other sources to reach a point where a person could just put the phone down and walk away.