Free Writing Prospectus

Filed Pursuant to Rule 433

Registration No. 333-169119

October 19, 2012

iPath, PO Box 940145, Plano, TX 75094-0145 Sample A. Sample 1234 N. Main Street Anywhere, AN 10011 Inside: One trade solutions to help manage fixed income risk.

Selected Risk Considerations Market and Volatility Risk: The market value of the An investment in the iPath ETNs described herein (the ETNs may be influenced by many unpredictable factors “ETNs”) involves risks. Selected risks are summarized here, and may fluctuate between the date you purchase but we urge you to read the more detailed explanation them and the maturity date or redemption date. You of risks described under “Risk Factors” in the applicable may also sustain a significant loss if you sell your ETNs prospectus supplement and pricing supplement. in the secondary market. Factors that may influence the market value of the ETNs include prevailing market You May Lose Some or All of Your Principal: The ETNs prices of the U.S. stock or U.S. Treasury markets, the are exposed to any change in the level of the underlying index components included in the underlying index, and index between the inception date and the applicable prevailing market prices of options on such index or any valuation date. Additionally, if the level of the underlying other financial instruments related to such index; and index is insufficient to offset the negative effect of the supply and demand for the ETNs, including economic, investor fee and other applicable costs, you will lose some financial, political, regulatory, geographical or judicial or all of your investment at maturity or upon redemption, events that affect the level of such index or other financial even if the value of such index has increased or decreased, instruments related to such index. as the case may be. Because the ETNs are subject to an investor fee and any other applicable costs, the return on A Trading Market for the ETNs May Not Develop: the ETNs will always be lower than the total return on a Although the ETNs are listed on NYSE Arca, a trading direct investment in the index components. The ETNs market for the ETNs may not develop and the liquidity of are riskier than ordinary unsecured debt securities and the ETNs may be limited, as we are not required to maintain have no principal protection. any listing of the ETNs. Credit of Barclays Bank PLC: The ETNs are unsecured debt No Interest Payments from the ETNs: You may not obligations of the issuer, Barclays Bank PLC, and are not, receive any interest payments on the ETNs. either directly or indirectly, an obligation of or guaranteed Restrictions on the Minimum Number of ETNs and by any third party. Any payment to be made on the ETNs, Date Restrictions for Redemptions: You must redeem including any payment at maturity or upon redemption, at least 50,000 ETNs of the same series at one time in depends on the ability of Barclays Bank PLC to satisfy its order to exercise your right to redeem your ETNs on any obligations as they come due. As a result, the actual and redemption date. You may only redeem your ETNs on a perceived creditworthiness of Barclays Bank PLC will affect redemption date if we receive a notice of redemption from the market value, if any, of the ETNs prior to maturity or you by certain dates and times as set forth in the pricing redemption. In addition, in the event Barclays Bank PLC supplement. were to default on its obligations, you may not receive any Uncertain Tax Treatment: Significant aspects of the tax amounts owed to you under the terms of the ETNs. treatment of the ETNs are uncertain. You should consult The Underlying Slope of U. S. the Treasury U.S. Treasury Note or Yield Bond Curve Yield or May The your own tax advisor about your own tax situation. Barclays Bank PLC has filed a registration statement the Increase, Term of Decrease Your ETNs: or Remain Unchanged Over (including a prospectus) with the SEC for the offering The return on your ETNs are to which this communication relates. Before you linked directly or inversely, as the case may be to the invest, you should read the prospectus and other performance of the underlying index, which corresponds documents Barclays Bank PLC has filed with the SEC directly or inversely, respectively to changes in the for more complete information about the issuer and underlying U.S. Treasury yield curve or U.S. Treasury note this offering. You may get these documents for free or bond yield. Changes in the underlying U.S. Treasury by visiting www.iPathETN.com or EDGAR on the SEC yield curve or U.S. Treasury note or bond yield are affected website at www.sec.gov. Alternatively, Barclays Bank by a number of unpredictable factors, and such factors PLC will arrange for Barclays Capital Inc. to send you may cause the underlying U.S. Treasury yield curve or the prospectus if you request it by calling toll-free U.S. Treasury note or bond yield to increase, decrease or 1-877-764-7284, or you may request a copy from any remain unchanged over the term of your ETNs. other dealer participating in the offering. There Decrease is or No Increase Guarantee by 1.00 that Point the Index For Every Level 0.01% Will BlackRock Investments, LLC, assists in the promotion of the iPath ETNs. Change in the Level of the Underlying U.S. Treasury yield curve or U.S. Treasury Note or Bond Yield: Reasons The ETNs may be sold throughout the day on the why this might occur include: market prices for underlying exchange through any brokerage account. Commissions U.S. Treasury note or bond futures contracts may not may apply and there are tax consequences in the event of capture precisely the underlying changes in the U.S. sale, redemption or maturity of ETNs. Treasury yield curve or U.S. Treasury note or bond yield; “Barclays US Treasury 2Y/10Y Yield Curve Index™”, the index calculation methodology uses approximation; “Barclays 2Y US Treasury Futures Targeted Exposure and the underlying U.S. Treasury note or bond weighting Index™”, “Barclays 5Y US Treasury Futures Targeted is rebalanced monthly. Exposure Index™”, “Barclays 10Y US Treasury Futures Due to the Index Multiplier, Any Changes in the Value Targeted Exposure Index™” and “Barclays Long Bond of Your ETNs Will Not Occur at the Same Rate as the US Treasury Futures Targeted Exposure Index™” are Corresponding Changes in the Value of the Underlying trademarks of Barclays Bank PLC. Index: The ETNs apply an index multiplier, the effect of ©2012 Barclays Bank PLC. All rights reserved. iPath, iPath which is to adjust and, for ETNs inversely linked to the index, ETNs and the iPath logo are registered trademarks of invert the rate at which the value of the ETNs changes in Barclays Bank PLC. All other trademarks, servicemarks or response to changes in the underlying index level. registered trademarks are the property, and - used - with the permission, of their respective owners. iP 0583 0812 NOT FDIC INSURED · NO BANK GUARANTEE · MAY LOSE VALUE

Obsessing over fixed income risk?

Commodities Currencies Equities Fixed

Breathe. iPath ETNs offer efficient strategies to help tailor risk exposure.

Because you already have enough on your mind.

From traditional macroeconomic factors like treasury supply and business cycles to exceptional risk factors like uncertainty Europe and ambiguous tax policies, the investing environment has never been more challenging. iPath Fixed Income Exchange Traded Notes (ETNs) offer one trade solutions that may:

Access ten unique ways to express your directional view on fixed income market performance

Execute a tactical view based on your expectations of yield curve steepness or flatness

Implement a hedging strategy to adjust portfolio sensitivity to yield curve exposure

Find out more at iPathETN.com/fixedincome or call 1-877-76-iPATH.

A suite of fixed income products that follow your train of thought.

iPath Fixed Income Exchange Traded Notes (ETNs) offer a diverse suite of exchange traded products that aim to provide targeted access to returns on the US Treasury yield curve. From the unique iPath Flattener and iPath Steepener, which execute directional strategies without accessing futures or swap accounts, to “Bull” and “Bear” products that can help you to offset risk in your portfolio, iPath ETNs offer efficient one trade solutions to help manage fixed income risk.

iPath Fixed Income ETNs

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STPP US Treasury FLAT US Treasury

Steepener Flattener

ETN ETN

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DTUL US Treasury DTUS US Treasury DLBL US Treasury

-year -year Long Bond

Bull ETN Bear ETN Bull ETN

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DFVL US Treasury DFVS US Treasury DLBS US Treasury

-year -year Long Bond

Bull ETN Bear ETN Bear ETN

ath® ath®

DTYL US Treasury DTYS US Treasury

0-year 0-year

Bull ETN Bear ETN

Terms of these ETNs are described in the relevant prospectuses, which you should read before investing.

Here’s Sample another A. Sample, efficient solution to a complex problem.

Take a minute to complete this short survey, and we’ll send you an IDAPT i1Eco — the universal, upgradable charger that works for all your electronic devices, so you never have to worry about what charger to carry or which one will work in the future.

1 XXXXXX

What best describes your primary responsibility? (please select one)

—Investment or Financial Advisor —Fixed Income Specialist —CIO or Portfolio Manager —Commodity Specialist

—Trader —Other, please explain:_____________ —Equity Specialist

2 What are your firm’s investable assets/assets under management?

—Under $100 million —$1 – $5 billion

—$100 – $500 million —Over $5 billion

—$500 million – $1 billion

3 Does your firm expect to change its use of ETNs in the future?

—Yes, increase —No, it will stay the same —Yes, decrease —N/A (we do not use them)

4 For which specific asset classes are you utilizing ETNs in your portfolio?

—Alternatives/Volatility —Domestic Leveraged —Commodities —International Leveraged —Currencies —Other —Fixed Income

5 What do you see as the benefits of ETNs, compared to other investment vehicles, you use? (select all that apply)

—Gain access to difficult-to- —Price reach exposures —Precise access to market —Ease of implementation and benchmarks trading flexibility —Tactical hedging tool —Tax efficiency

6 What do you consider the most important criterion when conducting due diligence on ETN providers? (select one)

—Issuer stability/credit risk —Exposure and market access —Product management —Fees —Performance track record —Liquidity —Breadth of product offering —Other, please explain:_____________

7 How do you think ETNs or ETFs can help support your current portfolio (tactical products, strategies, etc.)?

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