NEWS EDITORIAL USE ONLY. NO COMMERCIAL USE (including any use in merchandising, advertising or any other non-editorial use). This photograph is provided to you strictly on condition that you will make no charge for the supply, release or publication of it and that these conditions and restrictions will apply (and that you will pass these on) to any organisation to whom you supply it. All other requests for use should be directed to the Press Office at Kensington Palace in writing. The photographs must not be digitally enhanced, manipulated or modified in any manner or form and must include all of the individuals in the photographs when published. Not for use after 31st December 2020, without prior permission from Kensington Palace. Handout picture released by Kensington Palace of the Duke and Duchess of Cambridge talking with staff during a visit to the London Ambulance Service 111 control room in Croydon on Thursday to meet ambulance staff and 111 call handlers who have been taking NHS 111 calls from the public, and thank them for the vital work they are doing.