I want to test the ability of students to read a passage and answer questions about it. Could you please come up with a good question for the passage "RIBA Enterprises is the commercial arm of RIBA, with a registered office in Newcastle upon Tyne, a base at 15 Bonhill Street in London, and an office in Newark. It employs over 250 staff, approximately 180 of whom are based in Newcastle."? 

The company is served by how many in the primary location?