any other electrical/wireless installation and service company in the south east I would expect. The accounts show they have large corporate overhead (not exactly sure what since it included stock options I think) but the more contractors they can have out on the job with out hiring more HQ staff to issue invoices and bank checks the better.
the actual contractors are profitable.
lots of small private contractors who may be interested in nice Xmas present of a lumps sum for their business and they keep same jobs.