From what I read, this is a live contest and prizes are travelling to UK from anywhere in the world (where you can trade forex) and learn racing with a professional racer Sounds good.
You can live-chat with this broker with a click at the right bottom button, but you have to wait for a few mins. Some brokers put you in a support queue and you have to wait for 15-30mins for support.
Most MT4 brokers are tradable via mobile phone through a MT4 terminal. I think MetaQuotes - MT4 publisher share the API for mobile application developer.