| 10/01/2012 | Final British Gas Trading Limited Penalty Notice for breaches of the Gas and Electricity (Consumer Complaints Handling Standards) Regulations 2008 |
| 10/01/2012 | Final RWE Npower plc Penalty Notice for breaches of the Gas and Electricity (Consumer Complaints Handling Standards) Regulations 2008 |
| 03/11/2011 | Final British Gas Penalty Notice for misreporting under the Renewables Obligation |
| 03/11/2011 | Investigation into British Gas Trading Limited’s compliance with obligations under SLC 27.8 – Case closure decision |
| 16/08/2011 | Investigation of EDF Energy plc for potential breach of the Consumer Protection from Unfair Trading Regulations 2008 (CPR) |
| 01/07/2011 | Proposal of the Gas and Electricity Markets Authority to impose a financial penalty, following an investigation into compliance by British Gas Trading Limited with reporting requirements under the Renewables Obligation |
| 16/05/2011 | Final National Grid Gas Penalty Notice |
| 28/04/2011 | First Utility: notice of non-confirmation of provisional order |
| 13/04/2011 | Final Scottish Hydro Electric Power Distribution Penalty Notice |
| 13/04/2011 | Final Central Networks Penalty Notice |
| 13/04/2011 | Final Electricity North West Penalty Notice |
| 05/04/2011 | Case closure of E.ON, Scottish Power and Scottish and Southern Energy: Complaints Handling Investigation |
| 07/02/2011 | Central Networks Notice under section 27 A of the Electricity Act 1989 |
| 07/02/2011 | Electricity North West Notice under section 27 A of the Electricity Act 1989 |
| 07/02/2011 | Scottish Hydro Electric Power Distribution Notice under section 27 A of the Electricity Act 1989 |
| 06/01/2011 | Proposed National Grid financial penalty for breach of licence obligations on regulatory reporting |
| 22/12/2010 | Provisional order requiring First Utility to comply with SLC 27 of its supply licences |
| 01/06/2010 | Breach of complaints handling regulations by EDF Energy – decision document |
| 06/11/2009 | EDF Energy Networks’ compliance with obligations on timescales for connection offers. Final penalty notice |
| 24/07/2009 | Notice under section 27A of the Electricity Act 1989 |
| 06/04/2009 | Decision to close investigation into Npower’s compliance with standard licence condition 44(6) of its gas supply licence |
| 30/01/2009 | Decision of the Gas and Electricity Markets Authority, following an investigation into compliance by companies in the Npower group with standard licence condition 25 of their gas and electricity supplier licences |
| 19/01/2009 | Competition Act investigation into ScottishPower and Scottish and Southern Energy |
| 22/12/2008 | Notice under section 30A of the Gas Act 1986 and section 27A of the Electricity Act 1989 |
| 23/04/2008 | Closure Statement on SLC 28 Prepayment Meters |
| 15/02/2008 | Case Closure Statement by the Gas and Electricity Markets Authority, following an investigation into alleged non-compliance by SP Distribution Limited with Standard Licence Condition 4C of their Electricity Distribution Licence
- (Reference number: 12/08) |
| 05/02/2008 | Financial penalty decision by the Gas and Electricity Markets Authority, following a finding of breach by Northern Gas Networks Limited with its obligations under Standard Special Licence Condition D10 of the Gas Transporters Licence
- (Reference number: 10/08) |
| 20/12/2007 | Decision letter on variation of commitments
- (Reference number: 300/07) |
| 19/12/2007 | NGN final decision of the Gas and Electricity Markets Authority
- (Reference number: 297/07) |
| 18/12/2007 | Statement by the Gas and Electricity Markets Authority, following an investigation into compliance by Central Networks East plc and Central Networks West plc with their distribution licences
- (Reference number: 296/07) |
| 26/10/2007 | 261/07 - Proposal to vary the commitments given by SP Manweb under the Competition Act 1998 on provision of non-contestable services in electricity connections
- (Reference number: 261/07) |
| 24/07/2007 | 188/07 - Statement by the Gas and Electricity Markets Authority following an investigation into compliance by EDF with SLC 4C of its distribution licence (13/07/2007)
- (Reference number: 188/07) |
| 06/06/2007 | 141/07 - Statement by the Gas and Electricity Markets Authority of YEDL & NEDL's non-compliance with Standard Condition 49
- (Reference number: 141/07) |
| 25/01/2007 | Non-infringement Decision of the Gas and Electricity Markets Authority into EDFE’s alleged abuse of dominance by refusing to supply meter data services |
| 14/12/2006 | Ofgem's response to the joint DTI and HMT report on Concurrent Competition Powers in Sectoral Regulation |
| 22/08/2006 | Statement by the Gas and Electricity Markets Authority, following an investigation into compliance by GUC with its distribution licence
- (Reference number: 154/06) |
| 10/01/2006 | Statement by the Gas and Electricity Markets Authority, following an investigation into compliance by SP Manweb with obligations in its distribution licence relating to the calculation and reporting of units distributed and losses
- (Reference number: 07/06) |
| 27/10/2005 | Decision of the Gas and Electricity Markets Authority to accept commitments pursuant to section 31A(2) of the Competition Act 1998
- (Reference number: 234/05a) |
| 27/10/2005 | Commitments from SP Manweb plc to the Gas and Electricity Markets Authority pursuant to section 31A(2) of the Competition Act 1998
- (Reference number: 234/05b) |
| 31/08/2005 | Notice under Section 25 of the Electricity Act 1989 following an investigation into compliance by Atlantic Electric and Gas Limited (“Atlantic”)
- (Reference number: 195/05) |
| 27/06/2005 | Notice under paragraph 2 of schedule 6A of the Competition Act 1998 of the Gas and Electricity Authority's proposal to accept commitments pursuant to section 31A(2) of the Competition Act 1998
- (Reference number: 152/05) |
| 14/06/2005 | Decision by the Gas and Electricity Markets Authority - Compliance with Section 33BA of the Gas Act 1986 - Transco Plc
- (Reference number: 149/05) |
| 01/06/2005 | Statement by the Gas and Electricity Markets Authority, following an investigation into Southern Electric Gas Ltd’s and SSE Energy Supply Ltd’s compliance with standard licence condition 48 of their gas and electricity supply licences |
| 07/04/2005 | Decision concerning Ofgem's investigation into BGT's recruitment practices for meter reading agents |
| 16/02/2005 | Statement by the Gas and Electricity Markets Authority, following an investigation into compliance by Eastern Power Networks and London Power Networks with regulatory obligations
- (Reference number: 47/05) |
| 17/12/2004 | No grounds for action decision of the Gas and Electricity Markets Authority following an investigation of an alleged infringement of the Chapter II prohibition by United Utilities Electricity PLC and United Utilities Networks
- (Reference number: 281/04) |
| 04/10/2004 | Ofgem decision regarding publication of decisions to investigate alleged contraventions of any relevant condition or requirement
- (Reference number: 230/04) |
| 30/09/2004 | Notice under Section 25 of the Electricity Act 1989 following an investigation into compliance by Maverick Energy Limited (“Maverick”)
- (Reference number: 228/04) |
| 30/09/2004 | Notice under Section 25 of the Electricity Act 1989 following an investigation into compliance by Atlantic Electric and Gas Limited (“Atlantic”) with the Renewables Obligation and Renewables Obligation Scotland under The Renewables Obligation Order 2002
- (Reference number: 227/04) |
| 25/08/2004 | Decision of the Gas and Electricity Markets Authority, following an investigation into compliance by Powergen Retail Limited with its obligations under standard licence condition 30 of its gas suppliers licence
- (Reference number: 213/04) |
| 25/08/2004 | Decision of the Gas and Electricity Markets Authority, following an investigation into compliance by Powergen Retail Limited with its obligations under standard licence condition 20 of its electricity supply licence
- (Reference number: 212/04) |
| 11/08/2004 | Competition Act 1998 - Application in the Energy Sector
- (Reference number: 195/04) |
| 19/07/2004 | Statement by the Gas and Electricity Markets Authority, following an investigation into compliance by TXU Europe (AHOnline) Limited’s compliance with its obligations under Standard Licence Condition 20 of its Electricity Supply Licence
- (Reference number: 168/04) |
| 19/07/2004 | Statement by the Gas and Electricity Markets Authority, following an investigation into compliance by TXU Europe (AHGD) Limited’s compliance with its obligations under Standard Licence Condition 30 of its Gas Suppliers Licence
- (Reference number: 167/04) |
| 19/07/2004 | Notice of intention to impose a financial penalty by the Gas and Electricity Markets Authority, following an investigation into compliance by Powergen Retail Limited with its obligations under standard licence condition 30 of its gas suppliers licence
- (Reference number: 166/04) |
| 19/07/2004 | Notice of intention to impose a financial penalty by Gas and Electricity Markets Authority, following an investigation into compliance by Powergen Retail Limited with its obligations under standard licence condition 20 of its electricity supply licence
- (Reference number: 165/04) |
| 25/06/2004 | Statement by the Gas & Electricity Markets Authority, following an investigation into compliance by National Grid Company plc with its obligations under section 9(2)(a) of Electricity Act 1989 & Special Licence Condition AA4.1 of Electricity Transmission
- (Reference number: 144/04) |
| 25/06/2004 | Report on support investigations into recent blackouts in London and West Midlands Volume 1 - Main report
- (Reference number: 143a/04) |
| 25/06/2004 | Report on support investigations into recent blackouts in London and West Midlands Volume 2 - Supplementary report
- (Reference number: 143b/04) |
| 09/06/2004 | The Gas and Electricity Market Authority's decision under the Competition Act 1998 that npower plc has not infringed the prohibition imposed by Section 18(1) of the Act with regard to the sharing of Triad benefits
- (Reference number: 128/04) |
| 20/05/2004 | Decision of the Gas and Electricity Markets Authority, following an investigation into compliance by Transco plc with its obligations under section 9(1)(a) of the Gas Act 1986 in relation to its provision of connections services
- (Reference number: 106/04) |
| 22/04/2004 | Assurances re SLC 17 of the gas suppliers licences of various RWE Innogy subsidiaries |
| 13/04/2004 | Protecting customers: Ofgem’s enforcement powers |
| 23/03/2004 | Notice of intention to impose a financial penalty by the Gas and Electricity Markets Authority, following an investigation into compliance by Transco plc with its obligations under section 9(1)(a) of the Gas Act 1986 in relation to its provision
- (Reference number: 61/04) |
| 12/03/2004 | STATEMENT: Following investigation into compliance by Maverick Energy Ltd
- (Reference number: 54/04) |
| 12/03/2004 | STATEMENT - Following investigation into Compliance by TXU Ltd
- (Reference number: 53/04) |
| 01/03/2004 | Complaints considered by Ofgem under the Competition Act 1998: 1 March 2000 to 29 February 2004
- (Reference number: 46/04) |
| 10/02/2004 | The Gas and Electricity Market Authority’s decision under the Competition Act 1998 (Chapter II case) - United Utilities
- (Reference number: 29/04) |
| 04/12/2003 | Notice of intention to impose financial penalty - Npower Gas Limited
- (Reference number: 162c/03) |
| 04/12/2003 | Notice of intention to impose financial penalty - YE Gas Limited
- (Reference number: 162/03) |
| 04/12/2003 | Notice of intention to impose financial penalty - Npower Yorkshire Supply Ltd
- (Reference number: 162a/03) |
| 04/12/2003 | Notice of intention to impose financial penalty - Scottish Power Energy Retail Ltd (Electricity)
- (Reference number: 161b/03) |
| 04/12/2003 | Notice of intention to impose financial penalty - Scottish Power Energy Retail Ltd (Gas)
- (Reference number: 161a/03) |
| 30/09/2003 | Preliminary report into the recent electricity transmission faults affecting South London and East Birmingham
- (Reference number: 113/03) |
| 26/09/2003 | Provisional order - TXU (UK) Limited
- (Reference number: 108/03) |
| 26/09/2003 | Provisional order - Maverick Energy Limited
- (Reference number: 107/03) |
| 16/09/2003 | Statement by the Gas and Electricity Markets Authority, following an investigation into compliance by British Gas Trading Limited with its obligations under Standard Licence Conditions 17, 40(1), 40(5), 21 and 27(7)(b) of its Gas Suppliers Licence
- (Reference number: 102/03) |
| 12/09/2003 | The Gas and Electricity Market Authority’s decision under the Competition Act 1998 that London Electricity plc has not infringed the prohibition imposed by section 18 (1) of the act with regard to a ‘win back’ offer
- (Reference number: 100/03) |
| 20/06/2003 | BGT response: Notice of intention to impose a financial penalty by the Gas and Electricity Markets Authority, following an investigation into compliance by British Gas Trading Limited with its obligations under standard licence condition 20 |
| 19/06/2003 | Decision of the Gas and Electricity Markets Authority, following an investigation into compliance by British Gas Trading Limited with its obligations under standard licence condition 30 of its gas suppliers licence
- (Reference number: 53/03) |
| 19/06/2003 | Decision of the Gas and Electricity Markets Authority, following an investigation into compliance by British Gas Trading Limited with its obligations under standard licence condition 20 of its electricity supply licence
- (Reference number: 52/03) |
| 19/06/2003 | Ofgem confirms £200,000 financial penalty on British Gas
- (Reference number: R/52) |
| 16/04/2003 | Notice of intention to impose a financial penalty by the Gas and Electricity Markets Authority, following an investigation into compliance by British Gas Trading Limited with its obligations under standard licence condition 30 of its gas suppliers licence |
| 16/04/2003 | Notice of intention to impose a financial penalty by Gas & Electricity Markets Authority, following an investigation into compliance by BGT LTd with its obligations under standard licence condition 20 of its electricity supply licence |
| 18/11/2002 | Decision of the Gas and Electricity Markets Authority following an investigation into compliance by London Electricity plc with its obligations under standard licence condition 48 of its gas and electricity supply licences.
- (Reference number: 74/02) |
| 18/11/2002 | Ofgem confirms £2m penalty on London Electricity
- (Reference number: R/80) |
| 10/10/2002 | Decision of the Gas and Electricity Markets Authority following an investigation into compliance by London Electricity plc with its obligations under standard licence condition 48 of its gas and electricity supply licences. |
| 10/10/2002 | London Electricity faces £2 million financial penalty
- (Reference number: R/69) |