At last the Jubilee Line opens, or at least that bit of it that goes from North Greenwich to Stratford. And what about the rest? Safety inspectors still have their say apparently, and they have spotted a problem at London Bridge Station, where Weston Williamson's striking design uses an industrial kit of parts to make the 100-year-old tunnels look modern. The cast-iron and enamel panels it has designed fit within the ribs of the tunnel walling. Alas, the inspectors seem to think that, despite the flush surface, people might bump their heads. The answer? Installation of stainless-steel handrails throughout.