Is Cortana in the UK fully functional yet or have I missed something?

90% of the time if I ask it/her a fact, it just opens the browser with it typed into Bing.

Rarely (asking Obama's age for example) it will show the results in the Cortana box, but still doesn't voice the answer, rather just saying 'Here's what I found'.

I've seen the US version be able to do this, and can be asked a wide range of facts and have the answer read aloud. It is possible to enable this now in the UK or will it be integrated at a later date?