| Party Name | Party ID | Address | Party Roles | Allocated OSM | Telephone | Email |
| Accord Energy Ltd | ACCORD | Millstream East, Maidenhead Road, Windsor, Berkshire, SL4 5GD | BP, TI, TN, EN, MV | | 0870 010 6950 | Email the BSC Service Desk |
| Airtricity Generation (GB) Limited | AIRGEN | The Ca'D'Oro, 45 Gordon Street, Glasgow, G1 3PE | BP, TG | | 0870 010 6950 | Email the BSC Service Desk |
| Airtricity Ltd | AIRTIE | Airtricity House, Ravenscourt Office Park, Sandyford, Dublin 18, Ireland | BP, TI, EN | | 0870 010 6950 | Email the BSC Service Desk |
| APX Commodities Limited | APXCOMM | Ergo Building, Mere Way, Ruddington Fields, Nottingham, NG11 6JS | BP, TN | | 0870 010 6950 | Email the BSC Service Desk |
| Baglan Operations Ltd | BAGLAN | The Arena, Downshire Way, Bracknell, RG12 1PU | BP, TG, EN | | 0870 010 6950 | Email the BSC Service Desk |
| Barclays Bank Plc | BARCAP | Barclays Capital, 5 The North Colonnade, Canary Wharf, London, EC14 4BB | BP, TI, TN, EN, MV | | 0870 010 6950 | Email the BSC Service Desk |
| Barking Power Ltd | BARKING | Chequers Lane, Dagenham, Essex, RM9 6PF | BP, TG, EN, MV | | 0870 010 6950 | Email the BSC Service Desk |
| BES Commercial Electricity Limited | EBEA | 2 Darwin Court, Hawking Place, Bispham, Blackpool, Lancashire, FY2 OJW | BP, TS, EN | | 0870 010 6950 | Email the BSC Service Desk |
| BHP Billiton Marketing AG | BHPB | Verheeskade 25, 2521 BE, The Hague, The Netherlands | BP, TI, TN, EN, MV | | 0870 010 6950 | Email the BSC Service Desk |
| BizzEnergy Limited | BIZZ | BizzEnergy House, Brook Court, Whittington Road, Worcester, WR5 2RX | BP, TS, EN, MV | Charlotte Hutchinson | 020 7380 4302 | Email Charlotte Hutchinson |
| BKW FMB Energie AG | BKW | Viktoriaplatz 2, CH-3000 Bern 25, Switzerland | BP, TI | | 0870 010 6950 | Email the BSC Service Desk |
| BNP Paribas | BNPP | 16 Boulevard des Italiens, 75009 Paris, France | BP, TN, EN | | 0870 010 6950 | Email the BSC Service Desk |
| Bord Gais Eireann | BGET01 | 1st Floor, City Quarters, Lapps Quay, Cork | BP | | 0870 010 6950 | Email the BSC Service Desk |
| BP Gas Marketing Ltd | BPGAS | D'Arcy House, 146 Queen Victoria Street, London, EC4V 4JJ | BP, TI, TN, TG, EN, MV | | 0870 010 6950 | Email the BSC Service Desk |
| BP Power Trading Ltd | BRITGAS | Saltend, Hull, HU12 8DS, | BP | | 0870 010 6950 | Email the BSC Service Desk |
| British Energy Direct Limited | BEDL001 | Barnett Way, Barnwood, Gloucester, GL4 3RS | BP, TS | Damian Brooks | 020 7380 4350 | Email Damian Brooks |
| British Energy Generation (UK) Ltd | BEGL002 | 3 Redwood Crescent, Peel Park, East Kilbride, G74 5PR | BP, TG | Damian Brooks | 020 7380 4350 | Email Damian Brooks |
| British Energy Generation Ltd | BEGL001 | Barnett Way, Barnwood, Gloucester, GL4 3RS | BP, TG | Damian Brooks | 020 7380 4350 | Email Damian Brooks |
| British Energy Trading and Sales Limited | BEPET001 | British Energy, Barnet Way, Barnwood, Gloucester, GL4 3RS | BP, TI, TN, EN, MV | Damian Brooks | 020 7380 4350 | Email Damian Brooks |
| British Gas Trading Ltd | BRITGAS | Millstream East, Maidenhead Road, Windsor, Berkshire, SL4 5GD | BP, TS | Hannah Pargeter | 020 7380 4025 | Email Hannah Pargeter |
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