Genuine WAH-64D replacement?

Having just read this article posted by Tango III on the news thread:

http://www.janes.com/article/32844/british-army-wants-ah-64e-apache-before-end-of-decade

I wondered, are the British MOD really looking at other helicopter types to replace their Apaches?

The Army apparently don’t want that, so what would the motivation be to look at other types?