South Kensington and the Fulham Road

Grubby South Ken tube would be barely recognisable with its pedestrianised apron of flower stalls and buskers. Try the V&A Café, the world’s first museum café, designed by William Morris, before strolling down to Brompton Cross for Chanel, 3.1 Phillip Lim and Stella McCartney. Tackle the jewellery-box boutiques on Walton Street: leather loafers or baby linen, anyone?

End with champagne and oysters at Bibendum, in the lavish 1911 Michelin Tyre headquarters which is also home to vintage Sloaney interiors boutique The Conran Shop, or The Enterprise on Walton Street. Pubs down the Fulham Road include the revamped Hollywood Arms and the Anglesea Arms with its packed sun terrace.

Live the ’80s

Buy retro gear – mohair sweaters with batwing sleeves, pedal pushers, New Romantic pirate shirts – from Rokit in Brick Lane, Covent Garden or Camden.

Have a pint at the ‘Sloaney Pony’, aka The White Horse pub in the Sloane heartland of Parsons Green, now with a dinky, bricked-off beer garden with umbrellas.

Throw a bash at a posh London venue such as Searcys at 30 Pavilion Road – there since the 1920s. Then book Juliana’s – the ‘travelling discotheque’ to have at one’s 18th or 21st – now a chic DJ outfit (you can book them in Hong Kong, too).

Dine at San Lorenzo, Diana’s regular and much-papped haunt on Beauchamp Place in Knightsbridge, but mix up the experience with a pre- or post-prandial stint at Layalina shisha lounge just up the road.