National Grid plc
The National Grid is subject to the Environmental Information Regulations (EIR) due to their designation as a "holder of a transmission licence" [Energy Act 2004 (Designation of System Operator) Order 2004].
However, be warned that National Grid have written to the WhatDoTheyKnow.com team to say: "The information requests submitted to date, (or in the future, for that matter) will not receive a response from National Grid plc via the 'WhatDoTheyKnow.com' website. However, National Grid plc would be happy to consider any reasonable request for environmental information made direct to National Grid plc".
Despite this, we encourage you to make your request to National Grid plc in public using WhatDoTheyKnow. If they do not answer it, we recommend that you complain to the Information Commissioner.
You can only request information about the environment from this authority.
Only requests made using WhatDoTheyKnow are shown. ?