Free Writing Prospectus

Filed Pursuant to Rule 433

Registration No. 333-169119

May 23, 2011

iPath Exchange Traded Notes

iPath® Dow Jones-UBS Tin Subindex Total ReturnSM ETN

¹ Investors may redeem at least 50,000 units of the iPath® Dow Jones-UBS Tin Subindex Total ReturnSM ETN on a daily basis directly to the issuer, Barclays Bank PLC, subject to the procedures

described in the relevant prospectus.

iPath Exchange Traded Notes (ETNs) are senior, unsubordinated, unsecured debt securities issued by Barclays Bank PLC delivering

exposure to the returns of a market or strategy with the trading flexibility of a listed security. The iPath® Dow Jones–UBS Tin Subindex

Total Return SM ETN offers investors cost-effective exposure to tin as measured by the Dow Jones–UBS Tin Subindex Total Return SM

(the “Index”). Investors can trade on an exchange at market price or receive a cash payment at the scheduled maturity date or through

early redemption1, based on the performance of the Index, less investor fees.

NOTE DETAILS

Ticker JJT

Intraday indicative value ticker JJT.IV

Bloomberg index ticker DJUBSNTR

CUSIP 06739H198

Primary exchange NYSE Arca

Yearly fee 0.75%

Inception date 06/24/08

Maturity date 06/24/38

Index Dow Jones-UBS Tin Subindex Total

ReturnSM

* The investor fee is equal to the Yearly Fee times the principal amount of your securities

times the index factor, calculated on a daily basis in the following manner: The investor fee on

the inception date will equal zero. On each subsequent calendar day until maturity or early

redemption, the investor fee will increase by an amount equal to the Yearly Fee times the

principal amount of your securities times the index factor on that day (or, if such day is not a

trading day, the index factor on the immediately preceding trading day) divided by 365. The

index factor on any given day will be equal to the closing value of the index on that day divided

by the initial index level. The initial index level is the closing value of the index on the inception

date of the securities.

ISSUER DETAILS

Barclays Bank PLC long-term, unsecured obligations*

S&P rating AAMoody’s

rating Aa3

The iPath ETNs are not rated, but are backed by the credit of Barclays Bank PLC. The iPath

ETNs rely on the rating of their issuer, Barclays Bank PLC.

* We have not obtained a rating from any rating organization with respect to the iPath ETNs. A

security rating is not a recommendation to buy, sell or hold securities, and each rating should

be evaluated independently of any other rating. A security rating is subject to revision or

withdrawal at any time by the assigning rating organization, and there is no assurance that any

security rating will remain in effect for any given period of time or that it will not be lowered,

suspended or withdrawn entirely by the applicable rating agency. Any such lowering,

suspension or withdrawal of any rating may have an adverse effect on the market price or

marketability of the iPath ETNs.

MONTHLY INDEX RETURNS VS. S&P 500® INDEX

-25%

0%

25%

2002 2003 2004 2005 2006 2007 2008 2009 2010

Dow Jones-UBS Tin Subindex Total Return SM S&P 500 Index

Sources: Bloomberg, UBS Securities LLC, Dow Jones Indexes, S &P as of 03/31/11.

Index returns are for illustrative purposes only and do not represent actuaIndex actual

iPath ETN performance. Index performance returns do not reflect any

management fees, transaction costs or expenses. Indexes are unmanaged and

one cannot invest directly in an index. Past performance does not guarantee

future results. For current Index and iPath ETN performance, go to

www.iPathETN.com.

INDEX CORRELATIONS

Dow Jones-UBS Tin Subindex Total ReturnSM 1.00

Dow Jones-UBS Commodity Index Total ReturnSM 0.59

S&P GSCI® Total Return Index 0.54

S&P 500 Index 0.41

Barclays Capital U.S. Aggregate Bond Index -0.01

MSCI EAFE Index 0.54

Sources: S&P, UBS Securities LLC, Dow Jones Indexes, Barclays Capital, MSCI Inc.,

Bloomberg, BlackRock 03/06 - 03/11, based on monthly returns.

iPath® Dow Jones-UBS Tin Subindex Total ReturnSM ETN

FIND YOUR iPATH 1-877-764-7284 www.iPathETN.com

The Dow Jones–UBS Tin Subindex Total ReturnSM is a sub-index of the Dow Jones–UBS Commodity Index Total ReturnSM and is

intended to reflect the returns that are potentially available through an unleveraged investment in the futures contracts on physical

commodities comprising the index as well as the rate of interest that could be earned on cash collateral invested in specified

Treasury Bills. The Dow Jones–UBS Tin Subindex Total ReturnSM is a single-commodity sub-index currently consisting of one futures

contract on the commodity of tin, which is included in the Dow Jones–UBS Commodity Index Total ReturnSM.

INDEX TOTAL RETURNS & STANDARD DEVIATION

(as of 3/31/11)

1-YEAR RETURN % 3-YEAR RETURN %

ANNUALIZED

5-YEAR RETURN %

ANNUALIZED

STANDARD DEVIATION

% ANNUALIZED*

Dow Jones-UBS Tin Subindex Total ReturnSM 72.45 18.89 35.93 30.34

Dow Jones-UBS Commodity Index Total ReturnSM 28.49 -5.20 2.57 20.76

S&P GSCI® Total Return Index 22.73 -12.41 -3.34 27.31

S&P 500 Index 15.65 2.35 2.62 17.87

Barclays Capital U.S. Aggregate Bond Index 5.12 5.30 6.03 3.59

MSCI EAFE Index 10.42 -3.01 1.30 21.44

* Based on monthly returns for 03/06 - 03/11.

Sources: S&P, UBS Securities LLC, Dow Jones Indexes, Barclays Capital, MSCI Inc., Bloomberg, BlackRock.

Index returns are for illustrative purposes only and do not represent actual iPath ETN performance. Index performance returns do not reflect any managemenIndex management

fees, transaction costs or expenses. Indexes are unmanaged and one cannot invest directly in an index. Past performance does not guarantee future results. For

current Index and iPath ETN performance, go to www.iPathETN.com.

An investment in iPath ETNs involves risks, including possible loss of principal.

For a description of the main risks see “Risk Factors” in the applicable

prospectus.

Barclays Bank PLC has filed a registration statement (including a prospectus) with

the SEC for the offering to which this communication relates. Before you invest,

you should read the prospectus and other documents Barclays Bank PLC has filed

with the SEC for more complete information about the issuer and this offering.

You may get these documents for free by visiting www.iPathETN .com or EDGAR

on the SEC website at www.sec.gov. Alternatively, Barclays Bank PLC will arrange

for Barclays Capital Inc. to send you the prospectus if you request it by calling

toll-free 1-877-764-7284, or you may request a copy from any other dealer

participating in the offering.

BlackRock Fund Distribution Company assists in the promotion of the iPath ETNs.

iPath ETNs (the “Securities”) are unsecured obligations of Barclays Bank PLC and are not secured

debt. The Securities are riskier than ordinary unsecured debt securities and have no principal

protection. Risks of investing in the Securities include limited portfolio diversification, trade price

fluctuations, uncertain principal repayment, and illiquidity. Investing in the Securities is not equivalent to

direct investment in index or index components. The investor fee will reduce the amount of your return

at maturity or on redemption, and as a result you may receive less than the principal amount of your

investment at maturity or upon redemption of your Securities even if the value of the relevant index has

increased or decreased (as may be applicable to the particular series of Securities). An investment in

iPath ETNs may not be suitable for all investors.

The Securities may be sold throughout the day on the exchange through any brokerage account. There

are restrictions on the minimum number of Securities you may redeem directly with the issuer as

specified in the applicable prospectus. Commissions may apply and there are tax consequences in the

event of sale, redemption or maturity of Securities. Sales in the secondary market may result in

significant losses.

iPath ETNs typically have lower investor fees than currently existing mutual funds that invest in similar

markets and are available to retail investors. Buying and selling iPath ETNs will result in brokerage

commissions.

The index components for iPath ETNs linked to commodities indexes are concentrated in the

commodities sector. The market value of the Securities may be influenced by many unpredictable

factors, including, where applicable, highly volatile commodities prices, changes in supply and demand

relationships; weather; agriculture; trade; pestilence; changes in interest rates; and monetary and other

governmental policies, action and inaction. Index components that track the performance of a single

commodity, or index components concentrated in a single sector, are speculative and may typically

exhibit higher volatility. The current or “spot” prices of the underlying physical commodities may also

affect, in a volatile and inconsistent manner, the prices of futures contracts in respect of the relevant

commodity. These factors may affect the value of the index and the value of your Securities in varying

ways.

In addition to factors affecting commodities generally, index components composed of futures

contracts on industrial metals or energy-related commodities may be subject to additional factors

specific to industrial metals or energy-related commodities that might cause price volatility. These may

include changes in the level of industrial or commercial activity using industrial metals or with high

levels of energy demand; the availability and price of substitutes such as man-made or synthetic

substitutes or alternative sources of energy; disruptions in the supply chain; adjustments to inventory;

variations in production costs; costs associated with regulatory compliance, including environmental

regulations; and changes in industrial, government and consumer demand, both in individual consuming

nations and internationally. Index components composed of futures contracts on agricultural products

may be subject to additional factors specific to agricultural products that might cause price volatility.

These may include weather conditions, including floods, drought and freezing conditions; pestilence;

changes in government policies; planting decisions; and changes in demand for agricultural products,

both with end users and as inputs into various industries. Index components composed of futures

contracts on precious metals may be subject to additional factors specific to precious metals that

might cause price volatility. These may include disruptions in the supply chain, variations in production

costs, costs associated with regulatory compliance, including environmental regulations, changes in

industrial, government and consumer demand, and in the case of gold and silver, precious metal leasing

rates, currency exchange rates, the level of economic growth and inflation and the degree to which

consumers, governments, corporate and financial institutions hold physical gold or silver as a safe

haven asset (hoarding) which may be caused by a banking crisis/recovery, a rapid change in the value

of other assets (both financial and physical) or changes in the level of geopolitical tension.

The Dow Jones-UBS Commodity IndexesSM are a joint product of Dow Jones Indexes, a licensed

trademark of CME Group Index Services LLC (“CME Indexes”), and UBS Securities LLC (“UBS

Securities”), and have been licensed for use. “Dow Jones® “, “DJ,” “Dow Jones Indexes”, “UBS”, “Dow

Jones-UBS Commodity IndexSM”, “DJ-UBSCISM ”, “Dow Jones-UBS Commodity Index Total ReturnSM ”,

“Dow Jones-UBS Agriculture Subindex Total ReturnSM ”, “Dow Jones-UBS Aluminum Subindex Total

ReturnSM ”, “Dow Jones-UBS Cocoa Subindex Total ReturnSM ”, “Dow Jones-UBS Coffee Subindex Total

ReturnSM ”, “Dow Jones-UBS Copper Subindex Total ReturnSM ”, “Dow Jones-UBS Cotton Subindex

Total ReturnSM ”, “Dow Jones-UBS Energy Subindex Total ReturnSM ”, “Dow Jones-UBS Grains Subindex

Total ReturnSM ”, “Dow Jones-UBS Industrial Metals Subindex Total ReturnSM ”, “Dow Jones-UBS Lead

Subindex Total ReturnSM ”, “Dow Jones-UBS Livestock Subindex Total ReturnSM “, “Dow Jones-UBS

Natural Gas Subindex Total ReturnSM “, “Dow Jones-UBS Nickel Subindex Total ReturnSM “, “Dow

Jones-UBS Platinum Subindex Total ReturnSM “, “Dow Jones-UBS Precious Metals Subindex Total

ReturnSM “, “Dow Jones-UBS Softs Subindex Total ReturnSM “, “Dow Jones-UBS Sugar Subindex Total

ReturnSM “ and “Dow Jones-UBS Tin Subindex Total ReturnSM “ are service marks of Dow Jones

Trademark Holdings, LLC (“Dow Jones”) and UBS AG (“UBS AG”), as the case may be, have been

licensed to CME Indexes and have been sub-licensed for use for certain purposes by Barclays Bank

PLC. The Securities based on the indices are not sponsored, endorsed, sold or promoted by Dow

Jones, UBS AG, UBS Securities, CME Indexes or any of their respective subsidiaries or affiliates. None

of Dow Jones, UBS AG, UBS Securities, CME Indexes, or any of their subsidiaries or affiliates makes any

representation or warranty, express or implied, to the owners of or counterparts to the Securities based

on the indices or any member of the public regarding the advisability of investing in securities or

commodities generally or in the Securities based on any of the indices particularly.

©2011 Barclays Bank PLC. All rights reserved. iPath, iPath ETNs and the iPath logo are registered

trademarks of Barclays Bank PLC. All other trademarks, servicemarks or registered trademarks are the

property, and used with the permission, of their respective owners. iP-0364-0511

Not FDIC Insured No Bank Guarantee May Lose Value

iP-JJT-I0311