Nicola wasn't in the London version. Actually basically the whole London version was different. It included fictional characters used to "tie" the story together. The OLC and the OBC are a lot different because of this. Songs like Independent Woman, Touched by the Hand of Cool, and Pie in the Sky aren't on the OBC. They were replaced by Sexual Confusion, The Fame Game, Come on In From the Outside, etc...Also you'll see on the OLC the songs that are the same as the OBC are often sung by different characters. The character of Marcus, like Nicola, was not on the OLC. The OLC had characters like Billy, Josie, Kim, and Petal, along with Steve Strange (who, although a real person ,was not in the Broadway version).
I saw the UK tour and the Broadway version.
Aside from Pie in the Sky, I think the Broadway version was far superior.
And hang on, when did you win the discus?