United Kingdom, Feb. 10 -- Kerry Ellis "didn't expect" 'Wicked' to become such a success.

The 45-year-old star was the first British actress to play the role of Elphaba in the smash hit musical - which has gone on to become the 10th longest-running West End show since it opened in London in 2006 - but admitted that even when it was launched, the longevity it would go on to have was not at all obvious.

She exclusively told BANG Showbiz in a joint interview with co-star Adam Garcia: "I don't think we saw it coming at the time, because at the time when it came for me, it had been on Broadway a few years, but we didn't really know about it.

"So when we were in rehearsals, we didn't kind of see that kind of phenomenon coming, or that that e...