Form 8.3 IRISH TAKEOVER PANEL DISCLOSURE UNDER RULE 8.3 OF THE IRISH TAKEOVER PANEL ACT, 1997, TAKEOVER RULES, 2013 DEALINGS BY PERSONS WITH INTERESTS IN RELEVANT SECURITIES REPRESENTING 1% OR MORE 1. KEY INFORMATION Name of person dealing (Note 1)Invesco Ltd.Company dealt inWillis Towers Watson plcClass of relevant security to which the dealings being disclosed relate (Note 2)Ordinary Shares IE00BDB6Q211Date of dealing24-02-2021 INTERESTS AND SHORT POSITIONS Interests and short positions (following dealing) in the class of relevant security dealt in (Note 3) LongShort Number (%)Number (%)(1) Relevant securities1,447,621 1.122% 2,900 0.002%(2) Derivatives (other than options) (3) Options and agreements to purchase/sell Total1,447,621 1.122% 2,900 0.002% Interests and short positions in relevant securities of the company, other than the class dealt in (Note 3) Class of relevant security:LongShort No. (%)Number (%)(1) Relevant securities (2) Derivatives (other than options) (3) Options and agreements to purchase/sell Total DEALINGS (Note 4) Purchases and sales Purchase/sale Number of relevant securities Price per unit (Note 52Purchase1,736225.64 USDSale6,609225.64 USDSale10,050226.41 USD (b) Derivatives transactions (other than options transactions) Product name, e.g. CFDNature of transaction (Note 6)Number of relevant securities (Note 7)Price per unit (Note 5) (c) Options transactions in respect of existing relevant securities (i) Writing, selling, purchasing or varying Product name,e.g. call optionWriting, selling, purchasing, varying etc.Number of securities to which the option relates (Note 7)Exercise priceType, e.g. American, European etc.Expiry dateOption money paid/received per unit (Note 5) (ii) Exercising Product name, e.g. call optionNumber of securitiesExercise price per unit (Note 5) (d) Other dealings (including transactions in respect of new securities) (Note 4) Nature of transaction (Note 8)DetailsPrice per unit (if applicable) (Note 5) 2. OTHER INFORMATION Agreements, arrangements or understandings relating to options or derivatives Full details of any agreement, arrangement or understanding between the person disclosing and any other person relating to the voting rights of any relevant securities under any option referred to on this form or relating to the voting rights or future acquisition or disposal of any relevant securities to which any derivative referred to on this form is referenced. If none, this should be stated. Is a Supplemental Form 8 attached? (Note 9) NO Date of disclosure25-02-2021Contact namePhilippa HolmesTelephone number+44 1491 417447If a connected EFM, name of offeree/offeror with which connectedN/AIf a connected EFM, state nature of connection (Note 10)