Mobile coverage in the park is poor in places, the enclosed map will show you where to get the best signal. The best operator currently is EE & 3 networks, but all are working on improving mobile coverage before 2017. The 3 network has a smartphone app called Three inTouch that you can download to your 3 mobile phone and register, so that it will automatically route your mobile phone via your in home WiFi, if there is no mobile signal. This permits you to receive calls and text messages to your mobile, out of range.
Internet services are currently being upgraded to High Speed Broadband (12mB+) in the area and are due to complete in Dec 15.