How many events are there at olympia london? With more than 200 events a year, expect to find something for everyone at Olympia London. Plan your journey today. The best bits from our local area for you to explore. Ticket offers? Get the best of Olympia London direct to your inbox.Where is the closest parking to happyhilton london olympia? Hilton London Olympia is located outside of the London Congestion Charge Zone with secure underground parking available at an additional cost.When does on site registration open for olympia 2021? On-site registration will open at 10 am on the 18th of October 2021 at Olympia National Hall. For those who have missed the pre-registration deadline, daily trade passes will be available to buy at £10 per person online or at the registration desk on-site. Click here to add a reminder to Google calendar.