Roast tomato soup with basil and walnut oil toasts

Nigel used olive oil but I'm allergic to that so walnut oil it is.  Nigel starts this recipe saying 'chilled soups never really do it for me' -  I can honestly say that chilled anything never really does it for me - I hate cold food, as anyone who knows me will attest.  My devotion to and faith in Nigel, however, knows no bounds and so it was with just a little trepidation that I embarked upon the cold soup making road.  I'm never going to be a cold soup lover but this was good.  I think that because the flavours were robust there was nothing not to like.  Besides, I know I have hot monkfish to come!