[identity profile] crazyscot.livejournal.com 2009-02-04 07:00 pm (UTC)(link)
Feeding the postcode into samknows.com says there's a phone exchange in neighbouring Balfour, and that 5Mbit ought to be possible.

[identity profile] wellinghall.livejournal.com 2009-02-04 08:14 pm (UTC)(link)
Balfour is on the same island, and can't be more than a couple of miles away. At one stage, I think the postal address of the owner of the castle was something like "Mr Balfour, Balfour Castle, Balfour Island".