Assembly design committee chair Lord Callaghan promises 'a building for the 21st century'.
RRP selected to design the assembly from a shortlist of six.
Rumours that the RRP building would be scrapped in favour of siting the Assembly in Cardiff City Hall are denied.
Officials negotiate the purchase of extra land to accommodate better public access facilities.
Welsh secretary Alun Michael warns cost may rise to £22.8 million.
RRP given the green light to proceed with its design.
Disability groups praise the 'most accessible parliamentary building in the world'.
Contractors go on site.
Rumours emerge of difficulties.
RRP sacked from the scheme.