Bureaux, offices (8)
I believe the answer is:
agencies
I believe this is a double definition.
'bureaux' is the first definition.
('agency' can be a synonym of 'bureau')
'offices' is the second definition.
('agency' can be a synonym of 'office')
(Other definitions for agencies that I've seen before include "Organisations providing particular services" , "Bureaux" , "Service organisations" , "Businesses that serve others" , "They organise transactions, between advertisers and media perhaps" .)