I cannot remember the year the company was absorbed into BA, but as BA staff I went to the Danair HQ which was located very close to Southwark Cathedral. It was shared though separate entrances with the shipping arm that continued in business.
I was part of the BA security team that attended to secure documentation. Of more interest were the many paintings of their aircraft fleet on the walls. This was a Friday afternoon and due to travel issues we did not stop long, however, we went back Monday morning sharp as I wanted one of the paintings myself.
The offices were bare having been ransacked over the weekend by we know not whom ? I hope the stuff went to a good home.