I need the name and address of an ex-tenant's current employer

I need to enforce an attachment of earnings N337 but need to know the name and address of the current employer of my ex-tenant in the UK (NOT Merakey USA or Go-Tech Kent though).
I do have a lot of info about her but not her current employment details. I can only pay you for the job once the court has confirmed correct employer and the deductions from her salary have begun. The attachment of earnings is already in place and live, I am just now waiting for employer details. Getting this info will involve going through social media sites and other websites she may have visited.