First off, I'd like to echo the sentiments of my compatriot - the Daily Mail is not an unbiased source, and is well-practised in OVERT political and journalistic bias.
1. Does the now revealed liberal leanings of the BBC in anyway translate to any of the US media outlets?Unlike the USA, the laws in the UK
require ALL broadcast news to attempt balanced reporting in news & current affairs output. Often, this translates to getting extremists of both sides, in an adversarial debate, rather than ust exposing the facts, but then adversarial confrontation makes for more envigorating television and radio than a (potentially) dusty investigative report. However, this complies with the law. Even Murdoch's Sky News channel is subject to the same laws, although the BBC's special position as a publicly-funded broadcaster makes it particularly in the spotlight on this score.
Also, while they have been relaxed recently, commercial television and radio are only granted broadcasting licences on condition that they provide a certain amount of news, regional news, children's TV, etc.
The law does not translate into entertainment or factual programming - so some of the unspoken assumptions and prejudices that
moif mentioned are indeed widespread and largely un-commented upon.
What he fails to mention is that the BBC is also the only broadcasting outlet for some controversial
right-leaning journalists and commentators; Jeremy Clarkson, who's probably best described as a US-style libertarian, and Clarissa Dickson-Wright, who is pretty much the embodiment of landed-gentry High-Toryism in British TV both work exclusively for the BBC in broadcasting. Hell, the Mail's own Quentin Letts appears far more often on the Beeb than any other tv channel or radio station, but that's just another illustration of a
fundamental difference between liberal and conservative views on broadcasting, at least in the UK.
In essence, the idea that any one broadcaster should even attempt impartial political coverage is a liberal one. The UK newspaper market is already much the same in this regard as the American TV networks - they are free to take up any position they like, and the majority, incuding the best-selling papers, are distinctly right-leaning. One would assume from this that the British are essentially a right-leaning people, but only if the political bias of a newspaper is the dominant factor in choosing to buy or read it.
The conservative view of broadcasting would be - no public funding (conservatives are more oftne than not anti-tax, or at least anti-taxes-that-I-have-to-pay-which-go-to-things-I-disapprove-of, and this is a big part of the Mail's anti-BBC stance); a "free" market; complete freedom of speech so that channels can lean in a particular direction; that the channels which succeed will be those which most people choose to listen to; that anyone who feels their views are not represented can easily start up their own channel or station; and that if those people fail, it is because their biases do not reflect the audiences as well as the successful ones do.
This is simply not the case.
For one thing, people choose newspapers, and choose TV channels for many many reasons, and political leanings (or not) are only one reason.
And, just as with American TV, "free access" to the market is not remotely free. I could get together with some fellow liberals tomorrow and try to set up a new national newspaper. But the barriers to entry are simply massive, and are even greater in broadcasting. Existing players have a huge advantage in simple economic terms, which is why broadcasting (and UK newspapers) are massively dominated by a few big players.
Thinking just about US talk radio for a moment, lots of liberals listen to conservative talk-show hosts simply because it's more fun to shout and get angry with Rush Limbaugh (or whomever) than it is to silently nod in agreement with a liberal.
:::aside:::: OK - I'm biased. As a liberal, I think that liberals only enjoy debates where they might lose, and conservatives where they might win. A HUGE generalisation that's waaaaaaaaaaaaay off topic here
To summarise, I think UK broadcasting and US broadcasting are almost mirror images of one another. The mindset is almost entirely different, and we don't start form the same central assumptions about what broadcasting is and what it is for.
UK broadcasting is changing, as the BBC attempts to keep it's place in an increasingly fragmented, multi-channel environment, which has been the norm in the USA for a couple of decades longer than it has here. Taken as a whole, the British media probably do more or less reflect majority opinion in the UK. The leftie BBC is balanced by the righty Daily Mail and Sun, and the overall effect is probably something approaching the centre-right of the centre-left. But they are all distinctively British. They don't do much flag-waving, for example, simply because the British don't go in for a lot of that on a daily basis. This has good and bad points in itself. (Here I am trying to be balanced and not cause offence myself - maybe it's all just a Brit thing and my whole 'balance is a liberal concept' is bunkum. Well, I did try

)
I think, and this is from what I've seen from abroad and from when I've visited, that the same happens in the USA. Fox News on the right is balanced by Hollywood which is (broadly) left-leaning. The overall effect is probably broadly to the right of the centre-right, which is about where the America is as a whole.
In some respects, the changes in things like digital and HD-TV will make the industry more like that in the USA, not least because many of the organisations fighting for share of the screens are from the USA. But I don't really think that we will end up in the same place, because (despite appearances to the contrary sometimes) Britain and America are chalk and cheese - we are not the same and never will be. As they say in France
vive la différence2. Also in a political environment, how can there be fair coverage between a socially conservative candidate and a socially liberal candidate if the major media outlet in the UK(BBC) is socially liberal?Because, as I've said above, I think that only liberal broadcasters think that both sides should be given a fair hearing on the same network. The traditional conservative view would be to keep it all in the private sector and let stations set their own editorial standards, and that if liberals want to get an ariing on a conservative channel, they are whistling in the wind and should go and set up their own channel instead.