BP PLC — AGM Information 2011

Feb 25, 2011

Annual General Meeting 2011

bp.com/agm

A letter from Carl-Henric Svanberg, Chairman

Dear fellow shareholder 2010 was a profoundly painful and testing year. In April, a tragic accident on the Deepwater Horizon rig claimed the lives of 11 men and injured others. Above all else, I want to remember those men, and say that our thoughts remain with their families and friends. BP's priority is to ensure that the people who work for us, and with us, return home safely. The accident should never have happened. We are shocked and saddened that it did.

The spill that resulted caused widespread pollution. Our response has been unprecedented in scale, and we are determined to live up to our commitments in the Gulf. We will also do everything necessary to ensure BP is a company that can be trusted by shareholders and communities around the world.

You can read the full text of the chairman's letter at www.bp.com/summaryreview or if you would prefer to receive a printed copy of BP Summary Review 2010, please contact the BP Registrar at the address overleaf.

Notification of availability of shareholder documents

www.bp.com/annualreport

Shareholder documents are now available to view or download on our website using the above link. Please note that no material on the BP website, other than the items identified as BP Annual Report and Form 20-F 2010 and BP Summary Review 2010, forms any part of those documents. The time taken to access these documents will depend on your internet connection. You will also find video introductions from the chairman and group chief executive, and an animated summary of BP's performance in 2010.

www.bp.com/agm

Information about the meeting and voting is available on our website at the above link. You can view or download Notice of BP Annual General Meeting 2011, vote your shares and register to watch the AGM webcast. You can also sign up to receive an email notification when documents are available, instead of receiving a paper card.

If you prefer, you can use these direct links:

www.bp.com/notice www.bp.com/evoting www.bp.com/agm/webcast www.bp.com/edelivery

You can also vote your shares by completing and returning the enclosed proxy card. The deadline for receipt of voting instructions is 5.30 p.m. on Tuesday, 12 April 2011.

Paper copies

If you would like to receive paper copies of any of the documents listed above, for this year or in the future, please contact the BP Registrar. Before calling, please ensure that you have your 11-digit shareholder reference number (URN) to hand. This number can be found on the enclosed proxy form and is the last 11 digits of the 25-digit number quoted.

The BP Registrar

Equiniti, Aspect House, Spencer Road Lancing, West Sussex BN99 6DA Freephone 0800 701 107 (UK only) Tel +44 (0) 121 415 7005 (outside the UK)

This document is important and requires your immediate attention.

This card is formal notification to you that shareholder documents are now available online. It does not contain sufficient information to allow for an understanding of the proposals contained in the shareholder documents and should not be regarded as a substitute for reading the documents. All shareholders should read the documents made available online before voting or attending the annual general meeting.