The UK has completed the £2.3bn ($2.96bn) sale of the country’s Green Investment Bank (GIB) to global finance house Macquarie, which changed its name to the Green Investment Group (GIG) ahead of an international investment push.

The newly-rebranded GIG – set up as the GIB by the UK government in 2012 to help kick-start low-carbon projects – will retain its core remit under the Australian investment group, both parties claimed.