Groundation + Hollie Cook

Security -- Bag Policy: Large bags including rucksacks are not allowed. There are no facilities to leave large bags or luggage. If you really have to bring a bag -- and it's preferable you don't, please make sure it's small. Only one small bag per person is permitted and it must not be bigger than A4 size. Height: 28.7cm Width: 21cm Depth 15cm

Get live travel advice, best routes, what time to leave — your London guide.