Sounds like fun
My friends and I have recently begun a campaign in London and it's going well. We had a lot of ideas come up for city creation because London is so big you can fit almost anything in but here's some of the thoughts that came up.
Sewers and the Underground - there are miles and miles of tunnels under London, including secret underground train stations and 150 year old sewage systems - much of which connects to the Thames too. There's more than enough space to fit Black Court Vampires, tribes of Ghouls, were-rat gangs and secret societies.
Gog and Magog - Apparently London has it's own giant guardians
http://en.wikipedia.org/wiki/Gog_and_Magog#Gog_and_Magog_in_BritainSex - London could be heaven for the White Court. There are innumerable sex clubs catering to every conceivable kind of fetish.
Arthurian Legend - Arthur, the original Merlin, the Sword in the Stone and the Lady of the Lake; there is a wealth of material in this legend for NPCs, plot ideas and so forth. One of our characters is an emissary of the Lady of the Lake
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Hope that helps!
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On your character, I'd advise swapping spirit for water. Water is the element that fits both biomancy (cures and transformations) and entropmancy (curses and chaos). You can use entropomancy to create all kinds of luck magic, both positive and negative (speaking of which, aspects like 'strange luck' or 'warped luck' can be great to invoke and can also be fate-point machines!).
If you're going to be a full-on wizard then focus as much as you can in the three key skills; Conviction, Discipline and Lore. It might seem obvious but they are all vital and necessary, also specialise in one element for evocation and create a great focus item.
If you don't want to go full magic, still get Great or Superb Lore and then increase your item slots. Have lots of trinkets and potions seems appropriate for gypsy magic and it can be a very effective and fun character.
If you want to be more druidy, there are lots of scavengers in London
