generate questions: 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.
What is the name of the Royal Institute's business operation? {sep_token} Where does RIBA's business group have its headquarters office? {sep_token} How many people work for RIBA Enterprises? {sep_token} How many of RIBA Enterprises' staff are located at the Newcastle office?