It's not a Nikonos! None of these cameras - including the D4, Canon 1Dx, 5D or whatever - are waterproof or weatherproof, nor are they "sealed" in the common sense of the word. As you have discovered the hard way, they aren't really "sealed" rather they "have moisture barriers." I am surprised that the repair is only £100. A few other folks have made similar mistakes and the bills have run considerably more.
Rain covers such as the ThinkTank Hyrdrophobia are a standard part of my gear for this reason.
_____ Brian... a bicoastal Nikonian and Team Member
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