IG Markets are the ones behind Nadex in America, Nadex is regulated by the CTFC in America and are an exchange and not a broker. Unfortunately if you live outside The US Canada and Mexico you are not eligible to trade on the Nadex exchange. But IG Markets offer binaries out of England, I'm not sure if that's a good or bad thing because I haven't researched them over seas and I'm not going to either but heres their link if you are interested.
Binary Trading | Day Trading | Binaries | IG UK
I found this little tidbit on their site about Binary trading.................
Binary regulation
You should note that binary bets are not subject to regulation by the Financial Conduct Authority. In respect of binary bets, IG Index Ltd is licensed and regulated by the Gambling Commission. Reference number 2628.