Check your postcode with the spreadsheet in my signature.
Its not the latest data, but it might give you an idea.
Change the drop down to POSTCODE, and remove the space in the middle of the post code.
Just tried the spreadsheet. My address (MK429GN) is coming up as
I don't understand the Deployed field? Does it just mean that the exchange has been upgraded? or Does it mean that it available to me? given that the Phase is 8b which is Sept this year if understand correctly.