Hi Madeira & Aeonix,
firstly, when I was working at a corporate in Ealing back in 99-02, Chiswick just down the road wasn't as 'desirable' as it is now. Ealing was the place everyone wanted to buy/be in. I had a few freinds who were in Ealing and bought places etc, plus as it's just a little way from Slough, always used to go there and be in the bars and pubs etc!
Then in 2000, just near my office a 'new redevelopment' of a building commenced and the sign said '1,2,3 & penthouse apartments from £299,000' - I was gobsmacked! £300 grand for a 1 bed flat ?! - thankfully, around here things were a little more affordable. I watched the dotcom boom fall, then sept 11th and then the markets and thought i'm striking while the iron is hot to buy - but prices held steady and started rising. I managed to buy in sept 02. Chiswick then started popping up new bars and trendy type places and lo and behold, it moved up the rankings to be as desirable as what Ealing was just a couple years previously- amazing! Although I've never been in any of the houses there, the typically large victorian type places really do look good - i'd loved to have bought one but there's no way I'm shelling out that kinda money for a house, even if I had that much to spend!
My point is, the main 'reason' for the "insane" property prices is that there's more Demand than there is Supply. Prices naturally increase. Yes, buy to let investors are a factor in there but like any business, are there to make money. I think the focus has digressed slightly with some posters who don't like BTL investor style money making - would they be so vocal if say our income/salaries had risen proportionatley with the increases of costs of living here?
What I'm saying is, "generally those in a position to be BTL investors who can snap up a few properties would rather make money this way as the traditional ways of say playing in the stock market or working in a well/high paid job or running a business are much much less attractive nowadays"
So people say retiring with a nice healthy pot of money saying 'you know, i'll run my own business' are much fewer, it doesnt make as much financial sense to do that when you can make money albeit not as much, alot easier by just buying a house and renting it out.
I am an aspiring BTL investor - I don't mind saying so, I find that UK salaries currently dont go far enough in allowing the freedom to choose to buy a place, I'm hoping by running my own business I can make enough in order to puchase the type of property I'd like as well as live the way I like or would like to. I think by doing BTL I can be closer to doing that rather than working for someone else. The difference is that even BTL now isn't so attractive in the UK so I'm looking abroad.
Aeonix, as you say, and as many others are saying - it's currently impossible to get on the ladder and if you do, it's usually in a low end crummy area which means you just have to work that much harder for more years just to be able to move up to an acceptable area here and would therefore like to retun to the US in order to at least get much better value for money and the chance for a more decent area. I agree with you completely there, it'll just mean you'll hate me for buying up places there and renting them out !!

As I along with other UKY posters have mentioned here before, there's lots of different viewpoints and opinions and reasons for doing x y and z - it's just good to share and learn those differing points I think and the above was my view.
Cheers ! DtM! West London & Slough UK!