The first was held at Microsoft's TVP campus in Reading, United Kingdom.
There have been 10 DDD conference held in this location, as well as a number of regional conferences held in Belfast, Bristol, Wales, Cambridge, Dublin, Dundee, Edinburgh, Galway, Glasgow, Leeds, Sunderland, Taunton and Bradford.
In Australia: Perth, Sydney, Melbourne, Brisbane and Adelaide.
The original DDD event in Reading has frequently sold out on the day the tickets become available.
[1] The Australian DDD events do have a nominal ticket price, primarily to minimise the number of people who register to attend but don't show up.