Definition: 

It's a TV show. 
It presents people with talents, for example people who can play with electricity, people who can sing or dance, ... 
Everyone can participate. 

Logo: 

In the background, there is the flag of Britain. 
On the left, there is a big star. Maybe, it's a symbol for the winner. 
At the bottom, there are many stars. Maybe, it's a symbol for the candidates. 

Vocab: 
1 or 2 presenters
4 judges
candidates
spectators

Il y a ... : there is + singulier    /    there are + pluriel 

Localiser: 
In the background / in the foreground
On the left / On the right 
At the top / At the bottom