Howard Lewis, the general manager of Hilton Brighton Metropole, is leaving to take over the running of a prestige hotel in London. Mr Lewis, who has been in post since September last year, is expected to assume his new role before the end of next month. Sascha Koehler, currently general manager of the Hilton London Syon Park, will be his replacement. Mr Lewis, an executive member of Brighton and Hove Economic Partnership, is taking charge of the Hilton London Docklands Riverside, opposite Canary Wharf.