To everything there is a season and a time for every purpose; it is summer in Scotland Street (as it always is) and for the habitués of Edinburgh's favourite street some extraordinary adventures lie in waiting. For the impossibly vain Bruce Anderson - he of the clove-scented hair gel - it may finally be time to settle down, and surely it can only be a question of picking the lucky winner from the hordes of his admirers. The Duke of Johannesburg is...