Our first proper office was big enough for three people and a sink, so we could wash the mugs. When we moved downstairs into an office with a proper front door and room for six people, it felt pretty special.
We haven't really stopped growing since then. As a result, Fruit Towers in London is pretty much rammed these days. Luckily, we've just got the keys to next door (unit 6) so in a few weeks we'll be occupying units 3, 4, 5 and 6. We'll be up to about 100 people in London by then (another 30 or so in Manchester, Paris, Dublin, Amsterdam and Copenhagen) so we're looking forward to stretching out a bit.