Holding(s) in Company

TR-1: NOTIFICATION OF MAJOR INTERESTS IN SHARES 1. Identity of the issuer or the underlying issuer of existing shares to whichvoting rights are attached: GKN plc 2. Reason for the notification: (please state Yes/No): An acquisition or disposal of voting rights: Yes An acquisition or disposal of qualifying financial instruments which may resultin the acquisition of shares already issued to which voting rights areattached: No An acquisition or disposal of instruments with similar economic effect toqualifying financial instruments: No An event changing the breakdown of voting rights: No Other (please specify): No 3. Full name of person(s) subject to the notification obligation: Ameriprise Financial, Inc and its group 4. Full name of shareholder(s) (if different from 3.): See additional information under section 13 5. Date of the transaction and date on which the threshold is crossed orreached: 8 May 2014 6. Date on which issuer notified: 9 May 2014 7. Threshold(s) that is/are crossed or reached: Below the threshold of 5% 8. Notified details: A: Voting rights attached to shares Class/type Situation previous to Resulting situation after the triggeringof shares the triggering t transaction ransactionif possibleusing the Number of Number of Number of Number of voting % of votingISIN CODE Shares Voting R shares rights rights ights Direct Direct Indirect Direct Indirect GB0030646508 79,632,556 79,632,556 1,047,965 1,047,965 76,080,515 0.063% 4.638% US3617556069 940 940 0 0 2,301 0% 0% B: Qualifying Financial Instruments Resulting situation after the triggering transaction Type of Expiration date Exercise/ Number of voting % of votingfinancial Conversion period rights that may be rightsinstrument acquired if the instrument is exercised/ converted C: Financial Instruments with similar economic effect to Qualifying FinancialInstruments Resulting situation after the triggering transaction Type of Exercise Expiration Exercise/ Number of voting % of votingfinancial price date Conversion p rights rightsinstrument eriod instrument refers to Nominal Delta Total (A+B+C) Number of voting % of voting rightsrights 77,130,781 4.702% 9. Chain of controlled undertakings through which the voting rights and/or thefinancial instruments are effectively held, if applicable: Ameriprise Financial, Inc, which through intermediate holding companiescontrols the voting rights of Columbia Management Investment Advisers, ColumbiaWanger Asset Management, Threadneedle Management Luxembourg SA and ThreadneedleAsset Management Holdings Ltd, which itself controls the voting rights ofThreadneedle Asset Management Ltd, Threadneedle International Ltd andThreadneedle Pensions Ltd. Proxy Voting: 10. Name of the proxy holder: N/A 11. Number of voting rights proxy holder will cease to hold: N/A 12. Date on which proxy holder will cease to hold voting rights: N/A 13. Additional information: GKN is disclosing this information in accordance with DTR 5.8.12. The registered owners are set out below. Registered Owner Littledown Nominees Ltd A/c ZLA08 98,296 Littledown Nominees Ltd A/c 41407 4,819,957 State Street Nominees Limited A/c XC7N 1,924,707 Chase Nominees Ltd A/c 75102 933,929 HSBC Global Custody Nominee (UK) A/c 847452 208,845Limited HSBC Global Custody Nominee (UK) A/c 683182 1,173,961Limited HSBC Global Custody Nominee (UK) A/c 740190 725,519Limited HSBC Global Custody Nominee (UK) A/c 739874 3,060,272Limited HSBC Global Custody Nominee (UK) A/c 740311 360,203Limited The Bank Of New York (Nominees) A/c PTG 15303/ 09997799 419,635Limited HSBC Global Custody Nominee (UK) A/c 811056 154,627Limited Nortrust Nominees LTD A/c BBH05 594,943 William & Glyns (Isle of Man) A/c 301780 161,843Nominees Ltd Littledown Nominees Ltd A/c ZLA01 655,000 Littledown Nominees Ltd A/c ZLA03 21,462,347 The Bank Of New York (Nominees) A/c 52286 613,361Limited Littledown Nominees Ltd A/c 07198 950,158 Littledown Nominees Ltd A/c 27642 97,807 Littledown Nominees Ltd A/c 10478 29,874 Littledown Nominees Ltd A/c ZLA09 53,066 Littledown Nominees Ltd A/c 10479 32,674 State Street Bank & Trust Boston A/c GPE1 496,645 Littledown Nominees Ltd A/c ZLA12 1,015,910 Littledown Nominees Ltd A/c ZLA14 302,988 Littledown Nominees Ltd A/c 07207 1,628,941 Mellon Nominees (UK) Ltd A/c WWSF0004002 895,327 Littledown Nominees Ltd A/c 18667 946,480 Littledown Nominees Ltd A/c 10469 616,396 Littledown Nominees Ltd A/c 10496 10,823,338 Littledown Nominees Ltd A/c 10492 1,969,874 Littledown Nominees Ltd A/c 10491 7,412,898 Littledown Nominees Ltd A/c 10488 5,133,587 Littledown Nominees Ltd A/c 10495 1,875,000 Littledown Nominees Ltd A/c 10489 1,253,133 Littledown Nominees Ltd A/c 30337 264,070 Littledown Nominees Ltd A/c ZLA 15 3,962,869 Ameriprise Financial Inc A/c 2,301 14. Contact name: Katie Francis, Senior Secretarial Assistant 15. Contact telephone number: 01527 533383