What actors and actresses appeared in The Brit Awards 2010 Launch Party - 2010?

There is no record of a "The Brit Awards 2010 Launch Party - 2010" event. The Brit Awards are a prestigious music awards ceremony, and they don't typically have a separate launch party that would feature actors and actresses.

It's possible that you may be thinking of a different event or that the information you have is incorrect.

Could you please provide more details about the event you are referring to? For example, you could tell me:

* The specific date of the event

* The location of the event

* Any other information about the event you remember

With more information, I might be able to help you find the information you're looking for.