Thistle Barbican and City hotel is Located on the edge of London's square mile, approximately 10 minutes walk from the conference and exhibition centres at the Barbican and close to the Business Design Centre. Thistle Barbican and other Thistle Hotels online booking London . Hotels and bed and breakfast reservations. Select from various package rates from the Thistle Hotels own web site. Make your reservation and get your instant confirmation. Secure your booking and Pay when you arrive at the hotel.