Authority to spend has already been received for the Mezzanine Floor Development and it is intended to join the two projects to achieve better value due to the larger scale of the works and to avoid a second period of disruption to the library. The joint project can now proceed on a design and build basis with the engagement of professional consultants to support the delivery. The decision to undertake a separate procurement route for consultants was based upon the specialist nature of the building being listed, and to carry out comparative market testing exercise.