I used to love the Regent Street one taking a ticket and going to the relevant area.

Last one I used quite a lot was the one at Sand Street in Jersey in 2001-2 when I lived there. They Were actually a different travel agent so not one of the original BATS but would sell a package of flight and one night hotel in London from Jersey for little more than the air fare.

Paper tickets too. The Silver ticket books until cardboard boarding pass tickets were used before e-tickets. How the internet has changed the way we plan our travel.