BP PLC — Investor Presentation 2008

Oct 28, 2008

3Q 2008 Results Webcast

28th October 2008

Cautionary Statement

Forward-Looking Statements - Cautionary Statement

This presentation and the associated slides and discussion contain forward looking statements, particularly those regarding progress in delivering the strategy of upstream growth, downstream turnaround and corporate simplification; expected underlying performance of other businesses and corporate; production growth; oil and gas prices; TNK-BP's contribution to BP's results; level of turnaround activity in Refining and Marketing and its impact on volume and costs; likely pressures on marketing and supply businesses from the effects of the global economic downturn; likely charge in other businesses and corporate; effective tax rate; and year-end gearing. By their nature, forward-looking statements involve risks and uncertainties because they relate to events and depend on circumstances that will or may occur in the future. Actual results may differ from those expressed in such statements, depending on a variety of factors, including the timing of bringing new fields on stream; future levels of industry product supply; demand and pricing; operational problems; general economic conditions; political stability and economic growth in relevant areas of the world; changes in laws and governmental regulations; exchange rate fluctuations; development and use of new technology; changes in public expectations and other changes in business conditions; the actions of competitors; natural disasters and adverse weather conditions; wars and acts of terrorism or sabotage; and other factors discussed elsewhere in this presentation.

Reconciliations to GAAP - This presentation also contains financial information which is not presented in accordance with generally accepted accounting principles (GAAP). A quantitative reconciliation of this information to the most directly comparable financial measure calculated and presented in accordance with GAAP can be found on our website at www.bp.com

Cautionary Note to US Investors - The United States Securities and Exchange Commission permits oil and gas companies, in their filings with the SEC, to disclose only proved reserves that a company has demonstrated by actual production or formation tests to be economically and legally producible under existing economic and operating conditions. We use certain terms in this presentation, such as "resources" and "non-proved reserves", that the SEC's guidelines strictly prohibit us from including in our filings with the SEC. U.S. investors are urged to consider closely the disclosures in our Form 20-F, SEC File No. 1-06262, available from us at 1 St James's Square, London SW1Y 4PD. You can also obtain this form from the SEC by calling 1-800-SEC-0330.

October 2008

Byron Grote Chief Financial Officer

Trading environment

Financial results

Change vs. 3Q 2007

R l f h h i d t t t t e s u s o r e r q u a r e r	\$ b n	%	% h p e r s a r e
f R l i t t t • e p a c e m e n c o s p r o	0 0 1	8 1 4	1 5 1
P f i i l d i i i / l t t • r o n c n g n e n o r g a n s o s s e s u v y	8 0	8 3	8 5
N h i d d b i i i i t t t t • e c a s p r o v e y o p e r a n g a c v e s	1 4 9	3 1 4	3 1 7
	h / ¢ s a e r
D i i d d b i d t t t • v e n o e p a n e x q u a r e r	0 1 4		2 9
		C h h 9 2 0 0 7 t a n e s s g v m
R l f h 9 t t e s s o r m o n s u	\$ b n	%	% h p e r s a r e
f R l i t t t • e p a c e m e n c o s p r o	2 3 0	5 4	5 7
P f i i l d i i i / l t t • r o n c n g n e n o r g a n s o s s e s u v y	2 4 5	4 9	5 2
N h i d d b i i i i t t t t • e c a s p r o e o p e r a n g a c e s v y v	3 2 5	5 9	6 2

Exploration & Production

• •Higher realizations
• • Strong underlying production growth more than offset the impact of hurricanes and operational events in 3Q
• • Higher production taxes and depreciation
• •Higher TNK–BP contribution
• • Higher gas marketing and trading contribution
• • Non-operating items: embedded derivatives

Refining & Marketing

• •Improved refining operations
• •Improved marketing performance
• • Stronger commercial refining, supply and trading performance
• •Negative foreign exchange effects

Other businesses & corporate

Sources & uses of cash

Net debt ratio

Net debt ratio = net debt / (net debt + equity)

Net debt includes the fair value of associated derivative financial instruments used to hedge finance debt

Outlook

Exploration & Production

• •Lower oil and gas prices
• •Strong underlying growth in production continuing
• •TNK-BP: Tax lag

Refining & Marketing

• •Q4 turnaround activity
• •Impact of economic slowdown on marketing and supply

OB&C in line with February guidance

Tax rate expected around 33%

Strategic Progress Closing the competitive gap

• •Upstream growth
• •Downstream turnaround
• •Corporate simplification
• •Alternative Energy: disciplined growth

Byron Grote

Chief Financial Officer

Fergus MacLeod

Head of Investor Relations