Environmental consultancy firm SLR has acquired its Australian rival Heggies in a £12m deal, it emerged at the weekend. The group, which is owned by private equity company 3i, is understood to be looking at a string of possible acquisitions. Both firms advise companies on energy efficiency and ways in which they can cut their carbon footprint. Heggies’ previous projects include the design of a hot air exhaust system for the Sydney Harbour tunnel. The market for these services has expanded with the growing governmental realisation of the importance of climate change and 3i has given SLR its full backing to secure new acquisitions.