Rogers Stirk Harbour & Partners announced cuts yesterday totalling about a quarter of its London staff. After the shedding of nearly 300 jobs from Foster & Partners, the other architectural powerhouse, last month, the 35 job losses highlight the devastating effects of the credit crisis on architecture.

Lord Rogers said: 'Projects which seemed secure three months ago are now on hold or cancelled.'

Among them are the tower at 122 Leadenhall Street.

Financial Times