The RIBA's annual conference is the highlight of the architectural calendar and has proven to be increasingly popular over recent years.

Many of the world's top architects have recognised the benefits of working closely with others. But how do they do it? And what are the key ingredients of a successful relationship?

For decades now leading practices joined forces with fellow architects on major projects at home or overseas. They've realised that, by collaborating, the whole can be greater than the sum of the parts.

Other firms have built very strong bonds with fellow professionals – engineers, surveyors, artists and landscapers. And when the chemistry is right they've delivered brilliant buildings. The same is true of architects who have developed close working relationships with clients, contractors or specialist product suppliers.