The Ministry of Justice (MoJ) has admitted to a series of environmental failings following a parliamentary inquiry.
A January report by MPs on the environmental audit committee said the MoJ was failing to meet its own standards, including on carbon targets, BREEAM building certification and ultra-low emissions vehicles.
The committee launched its inquiry last year after concerns about how it was dealing with the sustainability of the second-largest Whitehall estate, which in 2016-17 recycled 56% of waste across its 1,650 sites, with disposal costing £7m.
MPs urged the ministry to collect environmental rating certificates systematically for all its refurbishment and new build projects, as well as improve its oversight of sustainability.
In its response, the MoJ has said it would reduce its use of single-use plastics and had already banished single-use coffee and water containers from its headquarters.
It would reduce its total waste by 31% by March 2020 against the 2009-10 level.
Committee chair Mary Creagh said: “Our report highlighted significant shortcomings in the MoJ’s approach to sustainability.
“I welcome the Government’s positive response to our report, that ministers accepted many of our recommendations and are acting on some of them.”