Sometimes I’ll go out to a coffee shop around lunchtime and one of the nearby coffee shops is next door to a pub. By about 1pm on most weekdays that pub is usually packed with people wearing suits (or who were likely wearing suits but removed their jackets). It’s a bit a mystery to me what sort of jobs they have where that is acceptable.
I assumed it's estate agents and if London the old school insurance guys like at Lloyd's. Otherwise the back office folks like accountants that no one checks on :)