70.10.Z - Activities of head office and holding companies, excluding financial holding companies
68.32.Z - Management of real estate on a fee or contract basis
70.22.Z - Business and other management consultancy activities
74.90.Z - Other professional, scientific and technical activities not elsewhere classified
77.33.Z - Rental and leasing of office machinery, equipment and computers
81.10.Z - Combined facilities support activities
81.29.Z - Other cleaning activities
82.11.Z - Office administrative service activities
82.19.Z - Photocopying, document preparation and other specialised office support activities
82.99.Z - Other business support service activities not elsewhere classified