Sea Bream with Tomatoes and Olives

This is a Mediterranean classic, with the added intensity of slow-roasted tomatoes. The idea derives from the twin brothers Jacques and Laurent Pourcel, who reign over their hotel le Jardin des Sens near Montpellier. It certainly improves beyond all recognition the flavour of sad, pale tomatoes, grown without the sunshine of the Midi, that we sometimes have to buy in Britain.