The original question by ManchesterUK was with regards to whether the multi-storey car park was to be demolished in the near future and I believe that we agree that that will not happen in the near future. Imagine the problems with regard to gaining terminal access whilst any demolition was taking place!
Now we have the secondary question of "if and when" Terminal 1 may be either totally revamped or, preferably, removed. Whilst we understand that the airport's Master plan does not provide for the terminal being retained in the long-term, I suspect if will still be around for maybe as long as the next 10 years.