It doesn't quite take the title for the tube station name with the most syllables, being narrowly pipped by Heathrow Terminals 2&3. It isn't unique in being named after a listed building, joining (amongst others) St Paul's, Bank, Mansion House and Marble Arch. It's rare in containing the name of a rock band (namely Sea Power, formerly British Sea Power) and almost the name of another (Duran Duran spin-off The Power Station). It's also, tediously, the only station name in the UK to include the word station.
Meanwhile Nine Elms becomes only the fifth tube station with a proper number in its name, joining the three Heathrow stations and Seven Sisters. This allows me, with a little contrivance, to list ten tube stations numbered from 1 to 10.
Roman numerals and homonyms are cheating somewhat, sorry, but at least the arrival of Nine Elms removes the need to include BrIXton. Interestingly Nine Elms is the second tube station whose name derives from a quantifiable group of elm trees, the other being Seven Sisters.
Nine Elms also joins an exclusive group of tube stations whose names are the anagram of a single word.
see also... Arsenal - RANALES East Acton - ANTECOSTA Eastcote - COESTATE Mile End - IDLEMEN Neasden - ENNEADS Old Street - DOTTERELS Redbridge - REBRIDGED South Ealing - LEIOGNATHUS