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LONDON--(BUSINESS WIRE)-- FORM 8.3 PUBLIC OPENING POSITION DISCLOSURE/DEALING DISCLOSURE BY A PERSON WITH INTERESTS IN RELEVANT SECURITIES REPRESENTING 1% OR MORE Rule 8.3 of the Takeover Code (the Code) 1. KEY INFORMATION Barclays PLC. SIGNATURE AVIATION PLC 05 February 2021 NO 2. POSITIONS OF THE PERSON MAKING THE DISCLOSURE If there are positions or rights to subscribe to disclose in more than one class of relevant securities of the offeror or offeree named in 1(c), copy table 2(a) or (b) (as appropriate) for each additional class of relevant security. (a) Interests and short positions in the relevant securities of the offeror or offeree to which the disclosure relates following the dealing (if any) Number (%) Number (%) (1) 8,212,173 0.99% 967,821 0.12% (2) 655,380 0.08% 7,395,916 0.89% (3) 0 0.00% 0 0.00% 8,867,553 1.07% 8,363,737 1.01% All interests and all short positions should be disclosed. Details of any open stock-settled derivative positions (including traded options), or agreements to purchase or sell relevant securities, should be given on a Supplemental Form 8 (Open Positions). (b) Rights to subscribe for new securities (including directors and other employee options) Class of relevant security in relation to which subscription right exists: Details, including nature of the rights concerned and relevant percentages: 3. DEALINGS (IF ANY) BY THE PERSON MAKING THE DISCLOSURE Where there have been dealings in more than one class of relevant securities of the offeror or offeree named in 1(c), copy table 3(a), (b), (c) or (d) (as appropriate) for each additional class of relevant security dealt in. The currency of all prices and other monetary amounts should be stated. (a) Purchases and sales Purchase/sale Number of Price per unit securities Purchase 136 4.1357 GBP Purchase 591 4.1270 GBP Purchase 601 4.1555 GBP Purchase 620 4.1325 GBP Purchase 621 4.1320 GBP Purchase 627 4.1290 GBP Purchase 641 4.1285 GBP Purchase 658 4.1600 GBP Purchase 671 4.1275 GBP Purchase 906 4.1390 GBP Purchase 1,312 4.1260 GBP Purchase 4,312 4.1349 GBP Purchase 5,000 4.1365 GBP Purchase 14,949 4.1363 GBP Purchase 15,244 4.1404 GBP Purchase 15,358 4.1344 GBP Purchase 24,036 4.1437 GBP Purchase 50,561 4.1338 GBP Purchase 50,854 4.1414 GBP Purchase 145,927 4.1398 GBP Sale 179 4.1470 GBP Sale 214 4.1346 GBP Sale 601 4.1555 GBP Sale 620 4.1325 GBP Sale 627 4.1290 GBP Sale 641 4.1285 GBP Sale 648 4.1270 GBP Sale 651 4.1390 GBP Sale 658 4.1600 GBP Sale 671 4.1275 GBP Sale 692 4.1260 GBP Sale 1,076 4.1489 GBP Sale 1,809 4.1476 GBP Sale 1,809 4.1497 GBP Sale 3,221 4.1391 GBP Sale 3,434 4.1358 GBP Sale 5,166 4.1296 GBP Sale 5,331 4.1250 GBP Sale 5,375 4.1362 GBP Sale 13,772 4.1326 GBP Sale 14,565 4.1426 GBP Sale 17,770 4.1282 GBP Sale 25,882 4.1280 GBP Sale 28,374 4.1336 GBP Sale 29,755 4.1410 GBP Sale 54,987 4.1378 GBP Sale 224,136 4.1320 GBP (b) Cash-settled derivative transactions Product Nature of dealing Number of Price per description reference unit securities CFD Long 214 4.1346 GBP SWAP Long 648 4.1270 GBP SWAP Long 692 4.1259 GBP SWAP Long 1,162 4.1470 GBP SWAP Long 6,958 4.1395 GBP SWAP Long 18,923 4.1343 GBP SWAP Long 51,221 4.1280 GBP SWAP Long 211,786 4.1329 GBP SWAP Short 136 4.1356 GBP SWAP Short 2,058 4.1383 GBP SWAP Short 3,643 4.1368 GBP CFD Short 12,202 4.1376 GBP SWAP Short 28,156 4.1397 GBP SWAP Short 56,835 4.1445 GBP SWAP Short 79,056 4.1375 GBP (c) Stock-settled derivative transactions (including options) (i) Writing, selling, purchasing or varying Class of relevant security Product description e.g. call option Writing, purchasing, selling, varying etc. Number of securities to which option relates Exercise price per unit Type e.g. American, European etc. Expiry date Option money paid/ received per unit (ii) Exercise Class of relevant security Product description e.g. call option Exercising/ exercised against Number of securities Exercise price per unit (d) Other dealings (including subscribing for new securities) Class of relevant security Nature of dealing e.g. subscription, conversion Details Price per unit (if applicable) 4. OTHER INFORMATION (a) Indemnity and other dealing arrangements Details of any indemnity or option arrangement, or any agreement or understanding, formal or informal, relating to relevant securities which may be an inducement to deal or refrain from dealing entered into by the person making the disclosure and any party to the offer or any person acting in concert with a party to the offer: Irrevocable commitments and letters of intent should not be included. If there are no such agreements, arrangements or understandings, state none None (b) Agreements, arrangements or understandings relating to options or derivatives Details of any agreement, arrangement or understanding, formal or informal, between the person making the disclosure and any other person relating to: (i) the voting rights of any relevant securities under any option; or (ii) the voting rights or future acquisition or disposal of any relevant securities to which any derivative is referenced: If there are no such agreements, arrangements or understandings, state none None (c) Attachments NO 8 Feb 2021 Large Holdings Regulatory Operations 020 3134 7213 Public disclosures under Rule 8 of the Code must be made to a Regulatory Information Service. The Panels Market Surveillance Unit is available for consultation in relation to the Codes disclosure requirements on +44 (0)20 7638 0129. *If the discloser is a natural person, a telephone number does not need to be included, provided contact information has been provided to the Panels Market Surveillance Unit. The Code can be viewed on the Panels website at www.thetakeoverpanel.org.uk.

Answer: FORM 8.3 SIGNATURE AVIATION PLC