Hi there, I was listening to the Robert Elms show yesterday and this was the very topic of conversation yesterday - BBC Radio London broadcast 01/10/08! (maybe it's on iPlayer?)
Several people called in with their description of an old Subterranean shopping street that exists under oxford street 2-3 floors below one of the shops on Oxford Street (then a large shoe shop - maye Dolcis), possibly near HMV. This was corroborated by a surveyor who contacted the show to say he'd visited the space and confirmed that the street existed with cobbled street, arched doorways, and old shop fronts.
The theory is that the old street was on the bank of the river that once flowed across Oxford Street (you can still see the river in the basement of Gray's Antiques on South Molton/Davis Street under a glass floor). Which is why it is so low down compared to the other buildings on Oxford Steet.
I have emailed subbrit.org.uk to see if they have any records of this. But if you can find a recording of yesterday's Elms show then you'll have all the low down. (UPDATE: have added the audio link of the show below which I assume is active until the next wednesday broadcast so listen now while you can).
Just out of interest there was also talk of "Tiles Street" which was an underground "arcade of shops (fashion shops, a beauty parlour, a coffee bar) situated within the old (now defunct) Tiles Club, a 60s basement discotheque on Oxford Street. The club, which was open on weekdays at lunchtime, and its clientele, are documented by Tom Wolfe in The Noonday Underground (The Pump House Gang, 1968). The club closed when its owners lost money investing in a pop festival at Woburn Abbey. In the 70s the premises became an aquarium. The site was further redeveloped (as offices, I believe) in the 80s".
Best regards, Ian.
Kingston.
http://www.bbc.co.uk/radio/aod/networks/london/aod.shtml?london/robertelms_wed
Posted: 2008-10-02 13:40:11