Controversial design by Enric Miralles wins despite £390m overspend on budget.

The controversial Scottish Parliament in Edinburgh has won the RIBA's Stirling Prize, the biggest award in UK architecture.

The award, presented in Edinburgh on Saturday night, was bestowed on the design by Enric Miralles and RMJM even though the building spiralled hugely over budget, shooting up from £40m to £431m.

The Scottish Parliament beat off competition from The Jubilee Library in Brighton by Bennetts Associates with Lomax Cassidy + Edwards, the BMW Central Building in Leipzig, Germany by Zaha Hadid Architects, the Lewis Glucksman Gallery in Cork, Ireland by O’Donnell + Tuomey, Foster and Partners' McLaren Technology Centre in Woking, and Alsop Design's Fawood Children’s Centre in Harlesden.