The Duke of Sussex today embarked on his final round of engagements as a senior working royal as he launched a new eco-friendly travel firm in Edinburgh - and asked delegates 'just to call him Harry'. Prince Harry, who will step down as a senior royal in less than five weeks, is in the Scottish capital for a 'working summit' of the Travalyst partnership, which will feature a grading system for users to track their carbon emissions. Before he took to the stage today, host Ayesha Hazarika, a former Labour adviser, said: 'He's made it clear that we are all just to call him Harry. So ladies and gentlemen, please give a big, warm, Scottish welcome to Harry.' Harry flew to Britain from Canada on a commercial flight earlier this week and arrived in Edinburgh on an eco-friendly LNER train from London King's Cross station last night, with taxpayer-funded Scotland Yard bodyguards. The 35-year-old Duke, who is officially known as the Earl of Dumbarton when in Scotland, has been stung by criticism over the past six months of his frequent use of private jets while campaigning on environmental issues. Harry's flight to Britain this week was believed to have been the seventh flight the Queen's grandson has taken so far this year - following return trips from Vancouver Island to London, Miami in Florida and Palo Alto in California.