Damien Hirst's new exhibition at the Wallace Collection is evidence of a deal between nervous guardians of the past and a contemporary artist seeking to burnish his future historical credentials. It stinks. Entitled No Love Lost, Blue Paintings by Damien Hirst - the clunking allusion to Picasso's Blue Period marks out the scale of Hirst's ambition - it presents 25 paintings that we are assured are actually by Hirst rather than a cohort of assistants.