8th Sep 2008 10:45
| FORM 38.5 (SUMMARY) | 
| Lodge with Company Announcements Office and the Panel. Use a separate form for each class of | 
| securities in which dealings have been made. | 
| CONNECTED EXEMPT PRINCIPLE TRADER: | 
| DISCLOSURE UNDER RULE 38.5 OF THE CITY CODE ON TAKEOVERS AND | 
| Name of EPT | Merrill Lynch International | 
| Date of disclosure | 08 September 2008 | 
| Date of dealing | 05 September 2008 | 
| Telephone number | 020 7996 2121 | 
| Please see attached disclosure of dealings under Rule 38.5 in the securities of the following | 
| 05 September 2008 | 
| Rio Tinto Plc - Common | 
| Rio Tinto Limited - Common | 
| Imperial Energy Corporation Plc - Common | 
| Banco Santander SA. - Common | 
| FORM 38.5 | 
| DEALINGS BY CONNECTED EXEMPT PRINCIPAL TRADERS | 
| (Rule 38.5 of The City Code on Takeovers and Mergers) | 
| 1. KEY INFORMATION | 
| Name of exempt principal trader | Merrill Lynch International | 
| Company dealt in | Rio Tinto Plc | 
| Class of relevant security to which the | Common | 
| dealings being disclosed relate | 
| Date of dealing | 05/09/2008 | 
| 2. DEALINGS | 
| (a) Purchases and sales | 
| Total number of securities | Highest price paid | Lowest price paid | 
| purchased | 
| 992,524 | GBP 46.18 | GBP 42.90 | 
| Total number of securities sold | Highest price received | Lowest price received | 
| 950,634 | GBP 45.80 | GBP 42.85 | 
| (b) Derivatives transactions (other than options) | 
| Product name, | Short/Long | Number of securities | Price per unit | 
| eg. CFD | 
| Long Swap | LONG | 400 | GBP 43.16 | 
| Long Swap | LONG | 657 | GBP 43.44 | 
| Long Swap | LONG | 1,550 | GBP 44.09 | 
| Long Swap | LONG | 3,100 | GBP 44.09 | 
| Long Swap | LONG | 3,250 | GBP 44.09 | 
| Long Swap | LONG | 6,500 | GBP 44.09 | 
| Long Swap | LONG | 6,992 | GBP 43.21 | 
| Long Swap | LONG | 10,337 | GBP 45.35 | 
| Long Swap | LONG | 223 | GBP 43.46 | 
| Product name, | Short/Long | Number of securities | Price per unit | 
| eg. CFD | 
| Short Swap | SHORT | 9,600 | GBP 43.88 | 
| Short Swap | SHORT | 9,783 | GBP 43.50 | 
| Short Swap | SHORT | 20 | GBP 44.40 | 
| Short Swap | SHORT | 8,878 | GBP 44.21 | 
| Short Swap | SHORT | 6,500 | GBP 43.60 | 
| Short Swap | SHORT | 4,150 | GBP 43.66 | 
| Short Swap | SHORT | 3,934 | GBP 43.14 | 
| Short Swap | SHORT | 3,100 | GBP 43.60 | 
| Short Swap | SHORT | 930 | GBP 43.66 | 
| Short Swap | SHORT | 520 | GBP 44.44 | 
| Short Swap | SHORT | 404 | GBP 44.21 | 
| Short Swap | SHORT | 190 | GBP 44.43 | 
| Short Swap | SHORT | 11,467 | GBP 43.14 | 
| (c) Options transactions in respect of existing securities | 
| Product name | Writing, | Number of | Exercise | Type, e.g. | Expiry | Option | 
| selling, | securities under | price | American, | date | money | 
| eg call option | purchasing, | option | European etc | paid/received | 
| varying etc. | per unit | 
| (ii) Exercising | 
| Product name | Number of securities under | Exercise price | 
| eg call option | option | 
| 3. OTHER INFORMATION | 
| Agreements, arrangements or understandings relating to options or derivatives | 
| Full details of any agreement, arrangement or understanding between the person disclosing and any | 
| other person relating to the voting rights of any relevant securities under any option referred to on this | 
| form or relating to the voting rights or future acquisition or disposal of any relevant securities to which | 
| any derivative referred to on this form is referenced. If none, this should be stated. | 
| NONE | 
| Date of disclosure | 08/09/2008 | 
| Contact name | Louise Howard | 
| Telephone number | +44 20 7996 2121 | 
| Name of offeree/offeror with whom connected | BHP Billiton Plc | 
| Nature of connection # | Advisor | 
| FORM 38.5 | 
| DEALINGS BY CONNECTED EXEMPT PRINCIPAL TRADERS | 
| (Rule 38.5 of The City Code on Takeovers and Mergers) | 
| 1. KEY INFORMATION | 
| Name of exempt principal trader | Merrill Lynch International | 
| Company dealt in | Banco Santander SA. | 
| Class of relevant security to which the | Common | 
| dealings being disclosed relate | 
| Date of dealing | 05/09/2008 | 
| 2. DEALINGS | 
| (a) Purchases and sales | 
| Total number of securities | Highest price paid | Lowest price paid | 
| purchased | 
| 2,665,190 | EUR 11.33 | EUR 10.97 | 
| Total number of securities sold | Highest price received | Lowest price received | 
| 3,328,644 | EUR 11.32 | EUR 10.97 | 
| (b) Derivatives transactions (other than options) | 
| Product name, | Short/Long | Number of securities | Price per unit | 
| eg. CFD | 
| Long Swap | LONG | 128,545 | EUR 11.10 | 
| Long Swap | LONG | 27,070 | EUR 11.14 | 
| Long Swap | LONG | 200 | EUR 11.16 | 
| Product name, | Short/Long | Number of securities | Price per unit | 
| eg. CFD | 
| Short Swap | SHORT | 200 | EUR 11.16 | 
| Short Swap | SHORT | 789 | EUR 11.15 | 
| Short Swap | SHORT | 15,087 | EUR 11.15 | 
| Short Swap | SHORT | 17,580 | EUR 11.15 | 
| Short Swap | SHORT | 239,642 | EUR 11.14 | 
| (c) Options transactions in respect of existing securities | 
| Product name | Writing, | Number of | Exercise | Type, e.g. | Expiry | Option | 
| selling, | securities under | price | American, | date | money | 
| eg call option | purchasing, | option | European etc | paid/received | 
| varying etc. | per unit | 
| (ii) Exercising | 
| Product name | Number of securities under | Exercise price | 
| eg call option | option | 
| 3. OTHER INFORMATION | 
| Agreements, arrangements or understandings relating to options or derivatives | 
| Full details of any agreement, arrangement or understanding between the person disclosing and any | 
| other person relating to the voting rights of any relevant securities under any option referred to on this | 
| form or relating to the voting rights or future acquisition or disposal of any relevant securities to which | 
| any derivative referred to on this form is referenced. If none, this should be stated. | 
| NONE | 
| Date of disclosure | 08/09/2008 | 
| Contact name | Louise Howard | 
| Telephone number | +44 20 7996 2121 | 
| Name of offeree/offeror with whom connected | Banco Santander SA. | 
| Nature of connection # | Advisor | 
| FORM 38.5(a) | 
| DEALINGS BY CONNECTED EXEMPT PRINCIPAL TRADERS WITH | 
| RECOGNISED INTERMEDIARY STATUS DEALING IN CLIENT- | 
| SERVICING CAPACITY | 
| (Rule 38.5(a) of The City Code on Takeovers and Mergers) | 
| 1. KEY INFORMATION | 
| Name of exempt principal trader | Merrill Lynch International | 
| Company dealt in | Rio Tinto Limited | 
| Class of relevant security to which the | Common | 
| dealings being disclosed relate | 
| Date of dealing | 05/09/2008 | 
| 2. DEALINGS | 
| (a) Purchases and sales | 
| Total number of securities | Highest price paid | Lowest price paid | 
| purchased | 
| 9,120 | AUS | AUS | 
| Total number of securities sold | Highest price received | Lowest price received | 
| 9,120 | AUS | AUS | 
| (b) Derivatives transactions (other than options) | 
| Product name, | Short/Long | Number of securities | Price per unit | 
| eg. CFD | 
| (c) Options transactions in respect of existing securities | 
| Product name | Writing, | Number of | Exercise | Type, e.g. | Expiry | Option money | 
| selling, | securities under | price | American, | date | 
| eg call option | purchasing, | option | European etc | paid/received | 
| varying etc. | per unit | 
| (ii) Exercising | 
| Product name | Number of securities under | Exercise price | 
| eg call option | option | 
| 3. OTHER INFORMATION | 
| Agreements, arrangements or understandings relating to options or derivatives | 
| Full details of any agreement, arrangement or understanding between the person disclosing and any | 
| other person relating to the voting rights of any relevant securities under any option referred to on this | 
| form or relating to the voting rights or future acquisition or disposal of any relevant securities to which | 
| any derivative referred to on this form is referenced. If none, this should be stated. | 
| NONE | 
| Date of disclosure | 08/09/2008 | 
| Contact name | Louise Howard | 
| Telephone number | +44 20 7996 2121 | 
| Name of offeree/offeror with whom connected | BHP Billiton Plc | 
| Nature of connection # | Advisor | 
| FORM 38.5(a) | 
| DEALINGS BY CONNECTED EXEMPT PRINCIPAL TRADERS WITH | 
| RECOGNISED INTERMEDIARY STATUS DEALING IN CLIENT- | 
| SERVICING CAPACITY | 
| (Rule 38.5(a) of The City Code on Takeovers and Mergers) | 
| 1. KEY INFORMATION | 
| Name of exempt principal trader | Merrill Lynch International | 
| Company dealt in | Imperial Energy Corporation Plc | 
| Class of relevant security to which the | Common | 
| dealings being disclosed relate | 
| Date of dealing | 05/09/2008 | 
| 2. DEALINGS | 
| (a) Purchases and sales | 
| Total number of securities | Highest price paid | Lowest price paid | 
| purchased | 
| 599,978 | GBP 11.70 | GBP 11.16 | 
| Total number of securities sold | Highest price received | Lowest price received | 
| 575,956 | GBP 11.64 | GBP 11.25 | 
| (b) Derivatives transactions (other than options) | 
| Product name, | Short/Long | Number of securities | Price per unit | 
| eg. CFD | 
| (c) Options transactions in respect of existing securities | 
| Product name | Writing, | Number of | Exercise | Type, e.g. | Expiry | Option money | 
| selling, | securities under | price | American, | date | 
| eg call option | purchasing, | option | European etc | paid/received | 
| varying etc. | per unit | 
| (ii) Exercising | 
| Product name | Number of securities under | Exercise price | 
| eg call option | option | 
| 3. OTHER INFORMATION | 
| Agreements, arrangements or understandings relating to options or derivatives | 
| Full details of any agreement, arrangement or understanding between the person disclosing and any | 
| other person relating to the voting rights of any relevant securities under any option referred to on this | 
| form or relating to the voting rights or future acquisition or disposal of any relevant securities to which | 
| any derivative referred to on this form is referenced. If none, this should be stated. | 
| NONE | 
| Date of disclosure | 08/09/2008 | 
| Contact name | Louise Howard | 
| Telephone number | +44 20 7996 2121 | 
| Name of offeree/offeror with whom connected | Imperial Energy Corporation Plc | 
| Nature of connection # | Advisor | 
Related Shares:
Banco SantanderRio Tinto