Lying about your address in order to get something you can't buy in the UK is fraud. You don't need to know much about legislation to know that misleading people in order to get something would come under that definition.
In any case it is against Amazon's terms and conditions and could lead to them closing your account. If you want to take that risk - your choice. Personally I wouldn't have thought it was worth risking.
I don't see what the problem is here. By changing his address the OP gets to read Tom Clancy's books on his Kindle, Amazon get a sale and Tom Clancy will get his cut. Happy days for everyone (except Damaskcat).
There is no law against anyone using whatever name they like, I don't care what name an author or anyone else uses. My point was that for an "unknown" author by giving a false background which stated specific expertise a potential purchaser could well have thought that this expertise would make the fictional story more realistic and hence buy it. If this increased purchases then I am back to my original statement that it was fraudulent as the author gained from the misrepresentation.
"The issue of giving a false address to enable access to anything you're not entitled to under your correct address is a whole different ball game."
The address-lock on internet downloads has nothing to do with whether the buyer is 'entitled to' buy the content or not. It's simply a region-lock in the seller's licensing deal with the publisher - a practice which the EU will put the kibosh on sooner or later (dividing the internal market and all that).
It isn't actually. It's to do with different publishers operating in different areas. Not something the EU could or should become involved in. To use a well known example - J K Rowling's Harry Potter books are published by Bloomsbury in the UK and Scholastic in the US but JKR herself has the digital rights for the series and sells the e-books through her own web site. I'm not sure whether she also sells translated editions.
So it's everything to do with which publisher has bought the rights to which edition from the author for which geographical territory. The EU can't come along and tell publishers which countries they should sell to if they don't have the rights from the author to sell in those countries.