As part of the Transforming Infrastructure Performance (TIP) programme, the Infrastructure
and Projects Authority (IPA) is developing a new top-down benchmarking methodology, which
will be used to encourage better and more consistent benchmarking across infrastructure
projects among both government departments and client organisations. The exercise described in this document successfully explored and tested that methodology.
In September 2018, in collaboration with the British Tunnelling Society (BTS), a tunnelling
forum was held as a pilot to help formulate the methodology. Tunnels were chosen as they
have been successfully benchmarked in the past and allow effective testing of the IPA’s
methodology. Industry stakeholders from multiple sectors came together to share information
on tunnelling costs, with additional data provided directly from a range of departments,
sponsors and programmes which are involved in tunnelling activities.
Following the exercise, participants have been able to enhance their own benchmarking and
decision making capabilities by enriching the information and analysis provided with their