Macquarie has defended its track record in Britain amid ongoing claims the investment bank's controversial bid for the UK government's Green Investment Bank could result in asset stripping and less investment in environmentally-friendly infrastructure projects.

Based in Edinburgh, the Green Investment Bank was founded in 2012 with £3.8 billion ($6.2 billion) of government funding and a mandate to invest in emerging green infrastructure projects across Britain, including wind farms, biomass plants and carbon capture and storage.