ISG starts two prison upgrades worth £135m

ISG is underway with two major prison upgrade projects at HMP Guys Marsh in Dorset and HMP Liverpool, together worth £135m.
Its £79m project at Guys Marsh prison will deliver two houseblocks, one with 122 cells, the other with 59, to increase capacity by 31%.
The project includes a new extension and a general refurbishment programme.Designed to be net zero carbon in operation and achieve a BREEAM Excellent environmental performance rating, the new house blocks feature air source heat