On the day in 1997 that new Labour announced a clampdown on road tax evaders, and ceremoniously pulped an offending vehicle before an invited press audience, Philip Delves Broughton, then a young diarist on the Times and resident of Notting Hill's exclusive Northumberland Place, stepped out into the bright morning.
Turning right, and heading towards the Tube station, he passed the front door of the then Minister without Portfolio, Peter Mandelson, his next-door-neighbour-but-one. Glancing at Mandelson's green Rover, he noticed, to his delight, that the tax disc had expired. Naturally enough, he wrote the story up and it appeared next morning in the Times.
"About six o'clock," he recalled to me last week, "I got a phone call at work from Mandelson, who was standing on a train platform with Derek Draper and Robert Harris, saying that he was appalled by the story. He asked me if I thought it was neighbourly behaviour. He clearly felt that his Notting Hill address entitled him to special treatment from the press."
But now the west London home that Mandelson apparently saw as a force field has become the very hubristic flaw that brought about his fall. Notting Hill, like Excalibur, is the ally only of he who has truly earned it and understands its mystical power.
In the aftermath of Notting Hillgate - as the scandal has come to be known - the most shocking revelation for the general public was that Mandelson lived in west, rather than north, London. Those who had been led to believe that N1 was the political postcode of the decade were left goggle-eyed by talk of W2. And the question left quivering on a million lips was: whatever happened to Islington person?
As a feature writer on the Times whose career began only weeks before the death of John Smith, I spent most of 1994 in Islington. I was sent to Granita the night after what the paper called "The Night of the Long Fishknives" to find out what it was about the Upper Street restaurant that had led Tony Blair and Gordon Brown to play out their power struggle on its stripped pine floorboards. Glenda Jackson was in there, and Judi Dench. Islington, they said, was the centre of new Labour power. And it all seemed so right.
But did new Labour fit in? I was sent to Barnsbury Square dressed in Victorian clothes with a troupe of carol singers from St Bride's to see how much the Blairs would give compared to the rest of the street. It took a harassed-looking Cherie some time to open the door. Surrounded by children, she seemed incredibly relieved to discover that we were only carol singers and not journalists. She gave a pound. Most of the rest of the street had given a fiver. I felt terrible, and told my editor there had been nobody at home.
Now fashion, like new Labour, has moved on. While the foot soldiers of the revolution - the Chris Smiths, Harriet Harmans, Geoff Mulgans and Alan Rusbridgers - are still in Islington, the key figures in the government's maturity are being gobbled into the gravitational pull of the Westway. Was Islington a mere staging post? Can we reasonably characterise it as the Damascene spot where old Labour paused on its route down from the grimy North, learnt its focaccia from its Ferragamo and practised a few new vowel sounds before its final push on the seat of privilege?
It is true that very few of our elected representatives, on their £45,066 a year, can afford an area that is now, in pounds per square foot, more expensive than Chelsea. But what has happened is that, ensconced in office, the Labour Party has turned towards the new establishment (better off, in fact, than the old Knightsbridge Tories) to keep up momentum. Lord Jenkins is crucial to Blair's ideological life, but Roy's neighbour in Kensington Park Gardens, Elisabeth Murdoch, will be of more long-term use to the party. And they both live on the all-important south side of the street. Anyone who is anyone backs on to Ladbroke Square, darling.
Benjamin Wegg-Prosser, the 26-year-old special adviser credited with overhauling the Mandelson image, must have been delighted when his boss moved in. Round the corner in Palace Gardens Terrace, Wegg-Prosser is just the sort of dyed-in-the-wool Notting Hillbilly (or should that be Notting Hilltony?) on whom the future of the party looks to depend.
Matthew Freud, the young head of Freud Communications and central to the Dome project, recently bought a £2.5 million house round the corner in Ladbroke Road, before moving out when his relationship with his neighbour Elisabeth Murdoch became public. She it may have been who pointed Mandelson towards Lambton Place Health Club, where he is often seen on the treadmill chatting to Lady Antonia Fraser. She and her husband, Harold Pinter, new Labour's greatest literary grandee, live two minutes up the road in Campden Hill Square. Blair's favourite huntsman, John Mortimer, is but a "view-halloo" away. Also in Notting Hill, you will find Lord Hollick, Blairite proprietor of the Express, and David Sainsbury, generous new Labour donor.
When the sacked minister David Clark blamed the loss of his job on being "out of the loop" and "not part of the London social scene", complaining that as an outsider "you don't make the contacts, you are not invited to the soirees, the coffee mornings, the dinner parties", he presumably had in mind Carla Powell. She, since becoming friends with Mandelson, has become the first "society hostess" for some time to enter the sphere of political influence. She lives in Caroline Place, but a short trot down Queensway from Newton Road, where the columnist Paul Johnson, a Blair confidante, seems also to be making a comeback.
The Express editor, Rosie Boycott, in Chepstow Road, has her part to play. Michael Jackson of Channel 4 and John Birt are among the other on-message media mandarins in the heart of Trustafaria.
There are red herrings, too: it is said that Peter Mandelson offered to babysit for his neighbour Princess Charlotte of Luxembourg, a power alliance that is probably not too threatening. Norman Lamont can be found in Kensington Park Road, but then he surely bears as much responsibility as any Millbank spin-doctor for getting new Labour into power. It's more difficult to fit in Tony Benn, who has lived in the area for years. It is not impossible to imagine the Prime Minister strolling down Westbourne Grove on a Sunday morning on his way to chat to Lord Jenkins about the Third Way, waving merrily to the gawping Okay Yardies, only to spot Benn coming back from the newsagent, and having to dart into Cafi 206 to hide behind Mariella Frostrup.
Perhaps there is a natural affinity between Labour and Notting Hill. For years after the war it was the working class, the poor and the ethnic minorities who made it what it was. By the 1980s, however, the property boom caused an identity crisis to set in, leading to some years in the wilderness. From the early 1990s, however, money was embraced wholeheartedly, and the area is now dominated by right-thinking but style-silly media slaves. They may have gone to public school, but they pay lip service to the ideals of cultural diversity and salt-of-the-earth rootsiness they believe their postcode upholds.
All this could so easily have been old hat by now. In November 1995 the Evening Standard revealed that the Blairs had employed a "looker" to find them a "suitable residence in west London". They were forsaking the wilds of Islington, it was revealed, for this "paradise for upmarket lefties". It was only the events of May 1997, then, that kept them out of Notting Hill. But for one small landslide Tony might have had an address to be really proud of.
It is still his dream. If you ask him where he would most like to be living in five years' time, he will say "No 10". Watch his eyes very carefully and say, "is that on the north side of Kensington Park Gardens or the south?"