EESDL,
You may have to choose another example - one of the elements of a Category A procedure is the size of the FATO; it is unlikely that there will be many helicopters that can meet the size constraints of Battersea.
Having said that, it might be possible to find a helicopter which can operate in PC1 (not Category A) from Battersea under the revised rules of NPA-38 (in the circumstances where a rejected take-off is not required); in the class of helicopter (that it appears) you are considering it is likely that the Grande will be one. Depending on the day, the latest marks of the EC135 might also be candidates.
Jim