LEVC, you really are rather foolish. If I were to fly across an expanse of water (lets say the Irish Sea) I will have no means of visually confirming my position. Consequently, I can either use the GPS or, even worse
, fly using RNAV. If I do either of the latter, are you telling me that I'm breaking the law? If so, I'll take myself straight to the CAA and demand my public spanking.
Now, can I suggest you understand regulatory principles. The only regulatory document is the ANO; everything else is an interpretation and expansion of this document. If you are perceived to be breaking the law, you can only be charged against one or more of the rules stipulated in the ANO.