Kiosks and shops on London Underground platforms

Updated – see italics and pic below it

St James's Park station sits directly underneath 55 Broadway (see last post below).
Coming home on Monday evening at about 7.30pm I noticed the old newspaper and confectionery kiosk the westbound platform was padlocked shut.
I don't use this station often – is it permanently closed? Are these kiosks a thing of the past?

I remember with fondness the one on Liverpool Street clockwise/eastbound platform and another on the westbound platform of Sloane Square both of which were still open and trading in the 1980s. But I never thought to photograph them then and I can't find any pics on the internet now.
Does anyone know of other kiosks still open and trading on the underground network, specifically under the ground on platforms, rather than in the open air? Pics please!
Here is High Street Kensington circa 1898 and in 1936 – there are many more lovely pics on The LT museum site, but their search engine is painful to say the least because it won't let you put multiple words in the box. Grrr!

Aha!  Look what I noticed last month – there is still a functioning kiosk at Sloane Square!!!

The Venus Fountain, Sloane Square

This is the final part of my walk along Kings Road

I bet most people walk past this beautifully understated piece and don't even notice it. But, please do stop and take a look, because it's lovely.
A bronze life-sized Venus, holding a vase and pouring water from a conch shell, kneels upon a bronze vase-shaped basin decorated with a whimsical relief of Charles II and Nell Gwynn along the Thames. This sits within and above an octagonal stone pool lined with blue ceramic tiles.

It was created by sculptor Gilbert Ledward R.A. (1888-1960) and was intended to be ready for Queen Elizabeth II's coronation but, sadly, there were problems over its instalment and the deadline was not met despite the date inscription*.
It is a reference to the Kings Road which was built during Charles II's reign. Just to the west of Sloane Square was the house where Nell Gwynn, his mistress, stayed on occasion. The vase depicts the lovers seated by the Thames – Charles picks fruit from a tree, whilst Nell Gwynn fans herself. An impish cupid sits nearby with two arrows ready and a deer and hound run in the background whilst a swan swims past.
The inscription around the top of the basin reads, "Sweet Thames run softly, till I end my song", from 'Prothalamion' by Edmund Spenser (1552-1599). The poem was a spousal verse written to honour a double marriage, the title meaning a song preceding the marriage ceremony.
A proposal in 2006 for Grade II listing was not approved.

*The inscription at the bottom of the basin reads: 'GLIBERT LEDWARD RA 1952', and beneath this, 'PRESENTED BY THE ROYAL ACADEMY OF ARTS THROUGH THE LEIGHTON FUND'.