Free Writing Prospectus - Filing Under Securities Act Rules 163/433 (fwp)

Free Writing Prospectus

Filed Pursuant to Rule 433

Registration No. 333-169119

May 22, 2013

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Site Optimized For: Financial Professional Sign In | Register iPat h* Welcome: Financial Professional Financial Professionals may access the latest: • ETN Strategies • Presentations • Product Briefs Login to Learn More » I am not a Financial Professional » US Change Help us improve the site BARCLAYS M Email this Page About iPath* ETNs iPath Exchange Traded Notes (ETNs) are innovative investment products from Barclays that seek to provide investors with a way to access the returns of a market or strategy, less investor fees. iPath ETNs offer: • Cost Efficiency • Daily Exchange Liquidity • Index Tracking Learn more about iPath ‘ ETNs » iPath’ Announcements January 4, 2013—Barclays Bank PLC announces the launch of the iPath’ S&P MLP ETN (ticker IMLP) See press release to learn more » October 5, 2012—Barclays Bank PLC to Automatically Redeem the iPathc Long Enhanced S&P 500 Vix Mid-Term Futures” ETN (II) See press release to learn more » Dig deeper into leveraged ETNs iPath’ Leveraged ETNs offer exposure to a host of equities where your leverage factor is locked in from point of purchase, with no tracking error and no resets. Selected Risk Considerations An investment in the iPath ETNs described herein (the ‘ETNs”) involves risks. Selected risks are summarized here, but we urge you to read the more detailed explanation of risks described under “Risk Factors” in the applicable prospectus supplement and pricing supplement. You May Lose Some or All of Your Principal: The ETNs are exposed to any change in the level of the underlying index, or the Volume Weighted Average Price (‘VWAP”) level, in the case of the iPath® S&P MLP ETN, between Ihe inception date and the applicable valuation date. Additionally, if the level of the underlying index, or the VWAP level in the case of the iPath® S&P MLP ETN, is insufficient to offset the negative effect of the investor fee and other applicable costs, you will lose some or all of your investment at maturity or upon redemption, even if the value of such index, or the VWAP value in the case of the iPath® S&P MLP ETN, has increased or decreased, as the case may be. Because the ETNs are subject to an investor fee and any other applicable costs, the return on the ETNs will always be lower than the total return on a direct investment in the index compDnents. The ETNs are riskier than ordinary unsecured debt securities and have no principal protection. Credit of Barclays Bank PLC: The ETNs are unsecured debt obligations of the issuer, Barclays Bank PLC. and are not, either directly or indirectly, an obligation of or guaranteed by any third party. Any payment to be made on the ETNs, including any payment at maturity or upon redemption, depends on the ability of Barclays Bank PLC to satisfy its obligations as they come due. As a result, the actual and perceived creditworthiness of Barclays Bank PLC will affect the market value, if any, of the ETNs prior to maturity or redemption. In addition, in the event Barclays Bank PLC were to default on its obligations, you may not receive any amounts owed to you under the terms of the ETNs. A Trading Market for the ETNs May Not Develop: Although the ETNs are listed on NYSE Area, a trading market for the ETNs may not develop and the liquidity of the ETNs may be limited, as we are not required to maintain any listing of the ETNs. No Interest Payments from the ETNs: You may not receive any interest payments on the ETNs. Restrictions on the Minimum Number of ETNs and Date Restrictions for Redemptions: You must redeem at least 25,000 or 50,000 (depending on the series) ETNs of the same series at one time in order to exercise your right to redeem your ETNs on any redemption date. You may only redeem your ETNs on a redemption date if we receive a notice of redemption from you by certain dates and times as set forth in the pricing supplement. Uncertain Tax Treatment: Significant aspects of the tax treatment of the ETNs are uncertain. You should consult your own tax advisor about your own tax situation. 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 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 Investments, LLC, assists in the promotion of the iPath ETNs. The ETNs may be sold throughout the day on the exchange through any brokerage account. Commissions may apply and there are tax consequences in the event Home Product Information I About iPath ETNsiPath ETN Resources Alternatives Commodities Currencies Emerging Markets » Fixed Income IMLP Efficient access to energy infrastructure. Leveraged Learn more ? Strategies

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or saie, reaempiion or maiunty or c i NS. The Dow Jones-UBS Commodity lndexes$M are a joint product of Cow Jones Opco, LLC (“Dow Jones Opco’), a subsidiary of S&P Dow Jones Indices LLC, and UBS Securities LLC (“UBS”), and have been licensed for use by Barclays Bank PLC. “Dow Jones®,” *DJ,” ‘‘UBS”, ‘Dow Jones-UBS Commodity Index®**’, “Dow Jones-UBS Commodity Index Total Retum$Mp, ‘Dow Jones-UBS Agriculture Subindex Total Return®*4’. “Dow Jones-UBS Aluminum Subindex Total Return®**”, ‘Dow Jones-UBS Cocoa Subindex Total Return®**’. ‘Dow Jones-UBS Coffee Subindex Total Return®**1. “Dow Jones-UBS Copper Subindex Total Return®**1, ‘Dow Jones- UBS Cotton Subindex Total Return®**’, “Dow Jones-UBS Energy Subindex Total Return®**’. “Dow Jones-UBS Grains Subindex Total Return®**’, “Dow Jones-UBS Industrial Metals Subindex Total Return®**’, “Dow Jones- UBS Lead Subindex Total Return$Mp, ‘Dow Jones-UBS Livestock Subindex Total Retum$M “Dow Jones- UBS Natural Gas Subindex Total Retum$M”, ‘Dow Jones-UBS Nickel Subindex Total Return®**’, “Dow Jones-UBS Platinum Subindex Total Return®**’. “Dow Jones- UBS Precious Metals Subindex Total RetumSM “Dow Jones-UBS Softs Subindex Total Return®*4’, “Dow Jones-UBS Sugar Subindex Total Return®**’, “Dow Jones- UBS Tin Subindex Total Return®**’ and *DJ-UBSCI®** are service and/or trademarks of Dow Jones Trademark Holdings. LLC (‘Dow Jones”) and UBS AG (“UBS AG”), as the case may be. S&P® is a registered trademark of Stancard & Poor’s Financial Services LLC. The ETNs based on the indices are not sponsored, endorsed, sold or promoted by Dow Jones, UBS, UBS AG, Dow Jones Opco or any of their respective subsidiaries or affiliates, and none of Dow Jones, UBS, UBS AG. Dow Jones Opco or any of their respective affiliates, makes any representation or warranty, express or implied, to the owners of or counterparts to the ETNs based on the indices or any member of the public regarding the advisability of investing in securities or commodities generally or in the ETNs based on any of the indices particularly. The MSCI indexes are the exclusive property of MSCI, Inc. (“MSCP). MSCI and the MSCI index names are service mark(s) of MSCI or its affiliates and have been licensed for use for certain purposes by Barclays Bank PLC. The financial securities referred to herein are not sponsored, endorsed, or promoted by MSCI. and MSCI bears no liability with respect to any such financial securities. The relevant pricing supplement contains a more detailed description of the limited relationship MSCI has with Barclays Bank PLC and any related financial securities. No purchaser, seller or holder of this product, or any other person or entity, should use or refer to any MSCI trade name, trademark or service mark to sponsor, endorse, market or promote this product without first contacting MSCI to determine whether MSCI’s permission is required. Under no circumstances may any person or entity claim any affiliation with MSCI without the prior written permission of MSCI. “S&P GSCI®”, “S&P GSCI® Index”, “S&P GSCI® Total Return Index”, ‘S&P GSCI® Commodity Index’ and ‘S&P GSCI® Crude Oil Total Return Index” are trademarks of Standard & Poor’s Financial Services LLC (“S&P”) and have been licensed for use by Barclays Bank PLC. The ETNs are not sponsored, endorsed, sold or promoted by S&P. S&P does not make any representation or warranty, express or implied, to the owners of the ETNs or any member of the public regarding the advisability of investing in securities generally or in the ETNs particularly or the ability of the S&P GSCI® to track general stock market performance. “Standard & Poors®’, “S&P 500®”, ‘S&P®” and “S&P 500® Total Return’, are trademarks of Standard & Poor’s Financial Services, LLC (“S&P”) and Dow Jones® is a registered trademark of Dow Jones Trademark Holdings LLC (“Dow Jones’). These trademarks have been licensed for use by S&P Dow Jones Indices LLC and its affiliates and sublicensed for certain purposes by Barclays Bank PLC. ‘CBOE®’ and “Buywrite’ are trademarks of the Chicago

Board Options Exchange, Incorporated (“CBOE’) and have been licensed for use by S&P Dow Jones Indices LLC and sublicensed for certain purposes by Barclays Bank PLC. S&P Dow Jones Indices LLC, Dow Jones, S&P, or any of their respective subsidiaries or affiliates (collectively, “S&P Dow Jones Indices’) and CBOE make no representation, condition or warranty, express or implied, to the owners of the ETNs or to any member of the public regarding the advisability of investing in securities generally or in the ETNs or in the ability of the index to track market performance. “Standard & Poor’s®’, “S&P 500®” and “S&P®’ are registered trademarks of Standard & Poor’s Financial Services, LLC (“S&P”) and Dow Jones® is a registered trademark of Dow Jones Trademark Holdings LLC (“Dow Jones’). Standard & Poor’s® S&P 500® S&P® and S&P 500® Total Return are registered trademarks of S&P and have been licensed for use by S&P Dow Jones Indices LLC and its affiliates and sublicensed for certain purposes by Barclays Bank PLC. The S&P 500® Total Return (the ‘Index”) is a product of S&P Dow Jones Indices LLC, and has been licensed for use by Barclays Bank PLC. S&P Dow Jones Indices LLC, Dow Jones, S&P, or any of their respective subsidiaries or affiliates (collectively, “S&P Dow Jones Indices’) make no representation, condition or warranty, express or implied, to the owners of the ETNs or to any member of the public regarding the advisability of investing in securities generally or in the ETNs or in the ability of the index to track market performance. ?Standard & Poors®”, ‘S&P 500®”, ‘S&P®*, ‘S&P 500® Total Return”, “S&P 500 VIX Short-Term Futures™’, ‘S&P 500 VIX Mid-Term Futures™” and “S&P 500® Dynamic VIX Futures™” are trademarks of Standard & Poor’s Financial Services, LLC (‘S&P’) and Dow Jones® is a registered trademark of Dow Jones Trademark Holdings LLC (‘Dow Jones”). These trademarks have been licensed for use by S&P Dow Jones Indices LLC and its affiliates and sublicensed for certain purposes by Barclays Bank PLC. “CBOE®”, ‘VIX®” and “BuyWrite” are trademarks of the Chicago Board Options Exchange, Incorporated (“CBOE”) and have been licensed for use by S&P Dow Jones Indices LLC and sublicensed for certain purposes by Barclays Bank PLC. This document is not sponsored, endorsed, or promoted by S&P Dow Jones Indices LLC, Dow Jones, S&P, or any of their respective subsidiaries or affiliates (collectively, “S&P Dow Jones Indices’) or by CBOE. S&P Dow Jones Indices and CBOE make no representation, condition or warranty, express or implied, to the owners of the ETNs or to any member of the public regarding the advisability of investing in securities generally or in the ETNs or in the ability of the indices to track market performance. “Russell 1000® Index” and “Russell 2000® Index” are trademarks of Frank Russell Company and have been licensed for use by Barclays Bank PLC. The ETNs are not sponsored, endorsed, sold, or promoted by Frank Russell Comoany and Frank Russell Company makes no representation regarding the advisability of investing in the ETNs. “S&P®’ is a registered trademark of Standard & Poor’s Financial Services LLC (“S&P”); Dow Jones® is a registered trademark of Dow Jones Trademark Holdings LLC (‘Dow Jones”); and these trademarks have been licensed for use by S&P Dow Jones Indices LLC. The S&P® trademark has been sublicensed for certain purposes by Barclays Bank PLC. The S&P MLP index (the “Index”) is a product of S&P Dow Jones Indices LLC and has been licensed for use by Barclays Bank PLC. The ETNs are not sponsored, endorsed, sold or promoted by S&P Dow Jones Indices LLC, Dow Jones, S&P or any of their respective affiliates (collectively, “S&P Dow Jones Indices”). S&P Dow Jones Indices does not make any representation or warranty, express or implied, to the owners of the ETNs or any member of the public regarding the advisability of investing in securities generally or in the ETNs particularly or the ability of the Index to track general market performance. Each of the Barclays commodities indices referenced herein is a trademark of Barclays Bank PLC. “Barclays US Treasury 2Y/10Y Yield

Curve Index™”, “Barclays 2YUS Treasury Futures Targeted Exposure Index™”, “Barclays 5Y US Treasury Futures Targeted Exposure Index™’, “Barclays 10Y US Treasury Futures Targeted Exposure Index™’ and ‘Barclays Long Bond US Treasury Futures Targeted Exposure Index™’ are trademarks of Barclays Bank PLC. “Barclays Optimized Currency Carry Index™” and the “USD Optimized Currency Carry Index™’ are trademarks of Barclays Bank PLC. “Barclays Global Carbon Index™” and “Barclays Global Carbon Incex Total Return™’ are trademarks of Barclays Bank PLC. “Barclays Global Emerging Markets Strategy (GEMS) Asia 8 Index™’, “Barclays Global Emerging Markets Strategy (GEMS) Pegged Currency Index™” and “Barclays Global Emerging Markets Strategy (GEMS) Index™” are trademarks of Barclays Bank PLC. © 2013 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. NOT FDIC INSURED • NO BANK GUARANTEE • MAY LOSE VALUE

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