Last week I attended the Eco-build conference. Conferences like this, and trade shows like Homebuilding and Renovating, and GrandDesigns Live, are a great places to get ideas and to target multiple suppliers/installers under one roof. Windows were a real struggle on our project and if I could go back I would take our window schedule and specifications and target as many suppliers as possible under one roof. I would do plenty of homework before you go so you know a little what you are talking about; its a trade show, people are obviously trying to sell you whatever they're selling, so knowing a little about first principles and the philosophy of your build will stand you in good stead.
On a side note it was a little disappointing to see the size of the conference has shrunk quite considerably in recent years. This is due I think to a number of factors. When I first visited the conference was packed to the rafters with solar PV firms with the industry booming on the back of the spectacularly badly handled FIT programme. The effects of austerity and the financial crises are still being felt with the potential that eco is seen as luxury and therefore sidelined. Finally, and I'm hoping this is the case, eco is being mainstreamed such that the scale and breadth of a specialist conference does not need to be so vast because the products and practices are being adopted anyway! The latter may be optimistic...!