If you can get a friend in the US to post this to you, you can get the Moto 360 for less than £100 at Amazon.com 

whichwearable.co.uk  Moto 360 highlights:

• Can download music to it and run without your phone with a  Bluetooth headset.
• Android Wear software, free updates.
• Great sync with Gmail, Hangouts and IFTT.
• Respond to emails and text with voice.
• Replaces your beside alarm with charging stand.
• Splash proof design.