"Stephen Furley" wrote:

I think they're built over long ago. Euston Square, originally Gower
Street, also had them, but not so easy to see now. The ones at Baker
Street were restored to something like original condition probably over
twenty years ago now, and lighting, at various times either high pressure
sodium (SON) or metal halide was installed to simulate daylight coming down the shafts.

Cheers all.

Neil
--
Neil Williams in Milton Keynes, UK. Put first name before the at to reply.