Now 301/4, Adrian's still worrying: Can he be a good father? Is Viagra cheating? Why won't the BBC produce 'The White Van', his serial killer comedy?Will he find the fulfilment he seeks as celebrity offal chef, single parent and celibate novelist? Is there a place for Adrian Mole in Blair's Brave New Britain?It is 1 May 1997. Now a celebrity chef at Hoi Polloi restaurant, Soho (and still an unpublished novelist), Mole has returned to the Midlands to cast his vote for the ravishing and Chanel-sui