The month...in numbers

3 The number of architects appointed to work on the £2bn Olympic Village outside the 47-strong framework list. The move provoked anger among architects on the framework.

5 The percentage Volvo has increased the cost of new plant and components in an effort to reduce the impact of global steel prices. Other manufacturers are also considering above-inflation rises.

20 The percentage of surveyors who experienced a drop in workload in the first three months of 2008, according to the latest survey by the Royal Institution of Chartered Surveyors.

112 The number of firms accused of bid-rigging and cover pricing activities by the Office of Fair Trading following a four-year investigation. The accused have until June 30 to respond to allegations.

124 The number of full-time construction inspectors in the HSE, the lowest figure since the division was launched in 2002.

457 The amount, in pence, that Balfour Beatty’s shares were worth on April 22, up from 450p on April 15. The City seemed little concerned with news that the contractor had been accused of bid-rigging activities on April 18.

30,000 The total number of students enrolled on new diploma courses this autumn, some 10,000 less than expected. Just 4,000 will complete the construction course.

303m The amount, in pounds, Balfour Beatty will be paid to build the 2012 Olympics aquatic centre. The sum includes £61m for a land bridge and is more than four times the original £75m Olympic bid estimate.