Great Western Coffee Shop

For so many stations, the views start coming just outside the station.    From the station itself ... I suggest ... Kyle of Lochalsh, though I have memories of standing towards the south end of the platforms at the old Blackfriears

The new Blackfriars station especially platform 1 looking East

View from platform - Starcross. A potential Beeching victim thankfully saved for our generations to enjoy.

Saltash superb view of the Bridges and Tamar

The 'best view' is of course subjective. Standing at the eastern end of Clapham Junction or London Bridge may provide the best view for a rail enthusiast.

Judge for yourself

Kyle of Lochalsh
(http://www.mbob.co.uk/rforum/kyle.jpg)

Saltash
(http://www.mbob.co.uk/rforum/saltashv.jpg)

Starcross (not strictly from the station)
(http://www.mbob.co.uk/rforum/starcross.jpg)

..and my choices - Ryde Esplanade
(http://www.mbob.co.uk/rforum/rydeesp.jpg)

- or Aviemore
(http://www.mbob.co.uk/rforum/aviemorev.jpg)

South Bermondsey, great view across to the City of London and Docklands.

Oh and The Den and CHP plant and the fact its in a not so nice part of London the views not so bad

Dawlish and Starcross both deserve consideration. I'm also going to say Sea Mills is worth an honourable mention. I've not stood at Harlech station but my guess is that the castle as a backdrop throws it into contention.
It might be more objective to divide nominees into categories, say for example, coastal, inland and urban.

Looe ....especially if railmotor 93 is in the vicinity.
Dartmouth ...or doesn't that count as it has never seen a train...so Kingswear then.
Grange over Sands.

Of those not already mentioned - all good choices - how about Durham?

St Ives Cornwall, surely!

From the north of England, add Garsdale, Ribblehead, Redmire on the Wensleydale Railway, any station between Kirkby in Furness and Ravenglass on the West Cumbria line.

And one that got away in Scotland - what a shame there's no longer a station at Killiecrankie! Ones that are still there - Plockton, and any on the line between Pitlochry and Aviemore, each with its own different landscape.

An unusual choice from my birthplace - the view north and west from the new over bridge at Reading- at least before some officious person blocked half of the latter by painting over the windows. I can no longer easily look out to see what the weather is like back home!

Elsewhere in the south - Corfe Castle on the Swanage Railway, Exton and those lucky commandos at Lympstone must get a good view of the Exe at their station.

For a small, urban, and perhaps not well known station, Nunhead in south east London has an excellent view in clear weather.
It is the highest station in London, and from the down platform has a panoramic view across central London and beyond.
St Pauls cathedral, the post office tower, the millennium dome, and many other sites are visible.

An even better view may be obtained by illegally climbing the newish radio mast at the London end of the platform. Despite the usual anti climbing precautions, the climbing of this tower remains popular with urban explorers.
I am not of course recommending or advocating such trespassing, it looks dangerous as well as being illegal.

This station has an island platform, and from the up side the view is less interesting but does include the (former) broadgage towers.

 
Hmmm, if you've not been climbing the mast, how do you know the view is so good?  ;)

I had forgotten about Nunhead, when on the platforms its easy to forget the area of London you are in

I am too old and fat to go climbing towers. I have a fear of falling off, and am also fairly law abiding.
I have however seen pictures taken  from atop the tower, they were, and probably still are publicly viewable. I do not feel it helpful to post any links to a site that blatantly encourages and glorifies trespass on railway and other property.

Another vote for Durham although I haven't visited Kyle of Lochalsh.

And not quite the station itself but I do like the view as you go into Berwick Upon Tweed.

I have no pictures from Durham - but I have checked back and found pictures from the two I nominated and another that I should have suggested.

(http://www.wellho.net/pix/fpvkl.jpg)

(http://www.wellho.net/pix/fpvmm.jpg)

(http://www.wellho.net/pix/fpvb.jpg)

It's when I have asked a question like this I come to realise just how few times I turn the camera away from the railway while still on the platform!

Carbis Bay isn't bad either.

I'd also suggest Ferryside, if you get up on the footbridge and look over the estuary towards Llanstefan Castle and the ocean.

Aviemore the favorite one (that I've been to) in the Highlands.