London is exactly 1 hour behind Rome year-round. When it's 3:00 PM in Rome, it's 2:00 PM in London. Both cities observe daylight saving time on the same schedule.
Italy uses Central European Time (CET/CEST) while the UK uses Greenwich Mean Time (GMT) and British Summer Time (BST). The 1-hour difference remains constant throughout the year.
Any business hours work great! With only a 1-hour difference, 9:00 AM - 5:00 PM London corresponds to 10:00 AM - 6:00 PM Rome. Full business day overlap.
London and Rome are two of Europe's most historically significant cities. The 2.5-hour flight connects the UK's financial capital with Italy's political and cultural center. Both cities have thriving fashion and luxury goods industries.