Claire has written an article for the Oct 2014 CIBSE Journal on our experience of using TM54.
http://portfolio.cpl.co.uk/CIBSE/201410/energy-performance-tm54-review/
CIBSE TM54: Evaluating Operational Energy Performance of Buildings at the Design Stage (2013) was designed to close the performance gap by enabling more accurate modelling of building performance, but how effective is it in the field?