Their handling company at Gatwick is Aviator. They handle a large number of other airlines there too, and they are rumoured to be in a less than ideal financial position. But why on earth would anyone need to move a 747 load of ground staff from Tenerife or Palma to the UK to deal with this, and would there be enough to spare anyway? Aviator's staff are still there. If the company has gone bust, the staff can be taken on by one of the other ground handling companies at Gatwick, and life goes on.