A search of the internet reveals other companies reside at 12 Mosley Street, and it appears to be a fully serviced office block:
http://www.egpropertylink.com/EGPLPROPERTY96168.htmThe NHS website shows that Independent Complaints Advocacy Service (ICAS) has been contracted out to different providers in different areas. The full list of areas and their providers is
here.
The Carers Federation operates ICAS for East Midlands, Yorkshire & Humberside (sic), the North West and North East. The head office for Carers Federation is in Nottingham:
Head Office
Unit 2.1
Clarendon Business Park
Clumber Avenue
Nottingham
NG5 1AH
T: +44 (0) 115 985 6677
F: +44 (0) 115 960 4838
Assuming that the 0845 number goes through to the Newcastle office rather than the Nottingham one, I think that it (the Newcastle office) and other Carers Federation offices have been opened to provide the ICAS in the respective areas. The same 0845 number is given for the Newton Aycliffe office, see
here.