Trading Statement

BP PLC
04 October 2005

October 4th, 2005

                      BP Third Quarter 2005 Trading Update

This trading update is aimed at providing estimates regarding revenue and
trading conditions experienced by BP in the third quarter ending September 30,
2005, and estimates of identified non-operating items expected to be included in
that quarter's result. The third quarter margin, price, realisation, cost,
production and other data referred to below are currently provisional, some
being drawn from figures applicable to the first month or so of the quarter. All
such data are subject to change and may differ quite considerably from the final
numbers that will be reported on October 25, 2005. This trading update is
produced in order to provide greater disclosure to investors and potential
investors of currently expected outcomes, and to ensure that they all receive
equal access to the same information at the same time.

Impact of Hurricanes Katrina and Rita

The trading conditions experienced by BP in the third quarter of 2005 were
significantly impacted by Hurricanes Katrina and Rita and their aftermath. These
effects include profits foregone due to lost oil and gas production from the US
Gulf of Mexico, where BP is a leading producer, as well as reduced refinery runs
at BP's Texas City refinery and reduced marketing margins as a result of the
sharp rise in wholesale petroleum product prices following disruption to the US
refining system. Additional costs were incurred due to facilities damage, clean
up and repairs. Although it is not yet possible to exactly quantify these
impacts, BP currently estimates that the impact of these factors on third
quarter replacement cost profit before interest and tax will be in excess of
$700m.

Resources Business: Exploration and Production

Marker Prices
                                      3Q'04   4Q'04   1Q'05   2Q'05   3Q'05
Brent Dated ($/bbl)                   41.54   43.85   47.62   51.63   61.63
WTI ($/bbl)                           43.88   48.29   49.88   53.08   63.18
ANS USWC ($/bbl)                      41.82   42.62   45.07   50.01   60.91
US gas Henry Hub first of month index
($/mmbtu)                              5.75    7.07    6.27    6.74    8.53
UK gas price - National Balance Point
(p/therm)                             23.63   28.51   37.96   30.15   29.26
Urals (NWE - cif) ($/bbl)             37.23   37.75   42.54   48.08   57.13
Russian domestic Oil ($/bbl)          23.33   22.30   19.14   27.39   36.60

Overall BP production in 3Q'05 is expected to be lower than 2Q'05 reflecting the
impact of Hurricanes Katrina and Rita (circa 145 thousand barrels of oil
equivalent a day, mboed) in the Gulf of Mexico and the planned maintenance
season (circa 160 mboed) primarily in the North Sea, which was approximately 45
mboed higher than the 3Q'04 level. These two locations represent some of our
highest margin volumes.

Excluding volumes from TNK-BP operations, production in 3Q is expected to be
around 2,800 mboed. BP's net share of production from TNK-BP is anticipated to
be approximately 1,000 mboed.

Adjusting for the impact of Hurricanes Katrina and Rita (with an expected full
year impact of around 80 mboed) and the impact of higher prices on production
sharing contracts (with an expected full year impact of around 50 mboed), BP's
average production for the year is expected to be in line with the range of
4,100 - 4,200 mboed indicated in our presentation of February 8, 2005.

Relative to 2Q'05, liquids realisations have increased by less than the increase
in marker prices as a result of widening differentials. In the US, gas basin
differentials have widened significantly, and our estimated realisations have
increased around $0.50/mcf, compared with a rise of around $1.80/mmbtu rise in
the Henry Hub marker.

Approximately $100m of additional costs were incurred in the quarter to secure
and repair the Thunder Horse facility. Sector specific cost inflation continues
to reflect the increasing strength in commodity prices.

Refining and Marketing

Refining Indicator Margins ($/bbl)
                                   3Q'04    4Q'04    1Q'05    2Q'05    3Q'05
USA
- West Coast                       11.28    10.36    12.88    14.53    17.57
- Gulf Coast                        6.99     5.52     7.30     9.37    17.12
- Midwest                           5.01     1.65     3.84     7.45    13.40
North West Europe                   4.37     4.72     2.84     5.68     7.78
Singapore                           5.48     8.02     4.98     6.30     6.52
Refining Global Indicator Margin*
($/bbl.)                            6.39     5.69     5.94     8.42    12.35

*The refining Global Indicator Margin (GIM) is a generic indicator. Actual
margins realised by BP may vary significantly due to a variety of factors,
including specific refinery configuration, crude slate and operating practices.

The third quarter's average refining Global Indicator Margin (GIM) was higher
than in both 2Q'05 and 3Q'04. The rise in BP's actual realised margins was
around half the increase indicated by the GIM. This was due to actual yields
differing from the generic industry yield structure reflected in the GIM
calculation, and the impacts on refining availability of continuing Texas City
plant shut downs and hurricane effects.

Third quarter marketing and retail margins were down significantly on 2Q'05,
with the overall marketing result expected to be negative. This was due to the
sharp rise in wholesale product prices, which squeezed marketing margins.

Gas, Power and Renewables

Due to strong contributions from the gas marketing and NGL businesses, margins
in the GP&R business are expected to be slightly higher than both 2Q'05 and
3Q'04.

Other Businesses and Corporate (including Olefins and Derivatives)

Other Businesses and Corporate

Other Business and Corporate results, excluding Olefins and Derivatives, are
expected to be in line with guidance given in our February '05 investor webcast
for an annual charge of $900m +/- $200m, indicating an expected quarterly charge
of around $175 - $275m in 2005.

Olefins and Derivatives

Olefins and Derivatives margins weakened from the levels of 2Q'05 due to
feedstock costs rising faster than end product prices. Results for Olefins and
Derivatives are reported in Other Businesses and Corporate, and will be
described separately in supplemental disclosures in our Stock Exchange
Announcement.

Consolidation Adjustment

The consolidation adjustment, which removes the margin on sales between segments
(mainly sales of Alaskan crude oil to US West Coast refining and marketing
operations), is expected to amount to a charge of around $300m.

Identified Non-Operating Items (NOIs)

Non-operating items in 3Q'05 are expected to amount to a total charge of around
$500m, of which approximately $450m relates to the annual review of
environmental and other provisions.

Interest Expense

The total consolidated interest charge is expected to be similar to 2Q'05 and a
year ago.

Tax Rate

The effective tax rate for the quarter is expected to be between 32% and 33%,
slightly above the level in the first half of the year.

Gearing

Gearing for the quarter is expected to remain slightly below the bottom end of
our 20-30 per cent band for net debt to net debt plus equity, reflecting
continued strong cash generation.

Distributions to Shareholders

During the quarter the company bought back 327 million shares for a total
consideration of $3.7bn. Shares outstanding at September 28, 2005, excluding
treasury shares and including the second issue of shares to AAR in respect of
TNK-BP, were 20,984 million. As in previous quarters, BP has entered into an
arrangement that allows it to continue the share buy back programme during the
closed period commencing on October 3.

The 3Q'05 dividend of 8.925 cents per share announced at the time of our 2Q'05
results was paid in September. The dividend to be paid in 4Q'05 will be
announced on October 25 in conjunction with our 3Q'05 Stock Exchange
Announcement.

Rules of Thumb

Important note: The rules of thumb shown below were provided with BP's strategy
update on February 8, 2005 and were intended to give directional indicators of
the impact of changes in the trading environment relative to that of 2004 on
BP's 2005 full year pre-tax results. These rules of thumb are approximate. As
prices and margins have deviated sharply from those seen in 2004, and volatility
has increased, these rules of thumb have become less accurate in quantifying the
impact of changes. Especially over short periods, changes in differentials,
seasonal demand patterns, and other factors can be material. Particular
differences may arise due to higher government shares of Exploration and
Production revenues in some jurisdictions at current price levels, as well as
from variations between the refining Global Indicator Margin (GIM) and BP's
realized refining margins due to crude price levels and differentials, product
price movements and other factors. The GIM rule of thumb reflects the
sensitivity to the overall group to changes in refining margins. Within the
refining rule of thumb shown below, about 13% of the sensitivity shown relates
to the refineries transferred to the Olefins and Derivatives business. Many
other factors will affect BP's earnings quarter by quarter. Actual results in
individual quarters may therefore differ significantly from the estimates
implied by the application of these rules of thumb.

2005 Operating Environment Rules of Thumb: impact on operating profit per year
of changes relative to 2004 environment

                                                           Full Year
Oil Price - Brent +/- $1/bbl                                 $500m
Gas - Henry Hub +/- $ 0.10/mcf                               $100m
Refining - GIM +/- $ 1/bbl                                  $1100m

- ENDS -




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