The Eurocode for the Design of Concrete Structures (Eurocode 2) comprising BS EN 19921 1:2004 and BS EN 199212:2004 was published at the end of 2004 by The British Standards Institution. The UK National Annexes (NA) setting out the Nationally Determined Parameters (NDPs) have also been published. These documents, together with previously published documents BS EN 1990:2002: Eurocode Basis of Structural Design and BS EN 1991: 2002: Eurocode 1 – Actions on Structures and their respective NAs, provide a suite of information for the design of most types of reinforced and prestressed concrete building structures in the UK. After a period of coexistence, the current National Standards will be withdrawn and replaced by the Eurocodes. This Manual is a complete revision to the Manual for the design of reinforced concrete building structures to EC2 March 2000 previously published jointly by the Institution of Structural Engineers and the Institution of Civil Engineers, but follows the same basic format. It provides guidance on the design of reinforced and prestressed concrete building structures that do not rely on bending in the columns for their resistance to horizontal forces and are also nonsway. The limit state design of foundations is included but the final design of prestressed concrete structures has been excluded. Structures designed in accordance with this Manual will normally comply with Eurocode 2. However it is not intended to be a substitute for the greater range of Eurocode 2. The NDPs from the UK NA have been taken into account in the design formulae that are presented. Designers should find this Manual concise and useful in practical design. It is laid out for hand calculation, but the procedures are equally suitable for spread sheet andor computer application. The preparation of this Manual was partly funded by The Concrete Centre and BCA. This funding allowed the appointment of a Consultant to assist the Task Group with the drafting and editing of the document. Special thanks are due to all of the members of the Task Group and to their organisations, who have given their time voluntarily. In addition, I would like to single out Tony Jones and his colleagues at Arup who acted as the Consultant to the Group, researching and drafting the final document whilst ensuring that the original programme was achieved. I am also grateful to Berenice Chan for acting as secretary to the Group and for fulfilling this considerable task with tolerance and skill. During the review process, members of the Institution provided invaluable comment on the draft Manual that has contributed to its improvement. I join with all of the other members of the Task Group in commending this Manual to the industry.