Canary Wharf is planned to be the busiest station on the underground - hence the design to accommodate large throughput. In addition to the "east" exit which mirrors the one I have shown, there is a three escalator exit to  an office block and an underground concourse/shopping area linking to the Docklands Light Railway station and other office blocks. The line has just been upgraded to run 7 carriage trains rather than the original 6. The Jubilee extension is the first to use platform barriers and automatic doors similar to the Paris Metro. The other mainline stations are a bit of a handful to find but here are a few (please resixe if they get out of hand)

First (literally) there is Paddington designed by IK Brunel which has a central "nave" and two side "chapels". The station has been restored and modernised in parts with the typical glass retail areas but the original cast iron roof remains.

I could not find a picture of the outside of Paddington but here is the main entrance of Charing Cross. As with many of the older London termini, the road frontage is dominated by a hotel built by the railway company. The spire-like sructure on the left of the picture is a victorian copy of the last of 12 "Eleanor Crosses" These were erected by King Edward I to make the places where the coffin of his wife rested overnight on its journey from Nottinghamshire, where Eleanor died, to Westminster Abbey. The cross is the point from which distances to London are measured. The station is fairly small with only 6 platforms and trains pass through London Bridge and Waterloo East on their way there. The glass roof at the ends of the platforms were destroyed in WWII and not rebuilt even though the butress walls remained. An office block has been built over the ends of the platform within these walls.

Waterloo station is best interpreted from this aerial shot. The London Bridge/Charing Cross tracks snake down the left of the picture, Waterloo East is about one third of the way down, by the redbrick coloured office block. The road that cuts off the top left corner of the picture also has The Old Vic theatre at about one third in from the left and one third down the picture.

The main 1920s station building fronts that road and is  the dark roofed/cream fronted strip going up the picture from the tall bock in the bottom left corner. To the left in the picture is the roof to the concorse joining the canopies over the platforms at right angles. The long roof at the bottom of the picture is Waterloo International- the current Eurostar terminal.

A  slightly lower angle that makes it a bit clearer how the station office buildings rise above the canopies.

Although it looks yellow in the above picture the 1920s building is in portland stone. The entrance is designed as a memorial arch to the workers of the then Southern Railway Company who died in WWI. The memorial plaque is on the right hand wall here.

This picture is of the main concorse with its fairly standard range of kiosks and shops selling books and snacks. On the right of the picture is a low wall and rail that overlooks the Eurostar departure area at a lower level, the escalators are not visible in this shot. At the far end from where this shot is taken there used to be a cartoon cinema that has long since closed.

The Eurostar entrance, as you can see they use automatic barriers to read the tickets.

The pitched glass roofs running accross the platforms contrast with the noble arches at Paddington.

The structure is visible from the outside at the southern side where there is a slip road used by vehicles (mostly taxis) serving the station.

Incidentally, the railway lines at the London termini around the river are usually on high viaducts to avoid dip and to combat the soft ground. I used to work in County Hall which is very close to Waterloo and used to walk through a road that cuts through the very tall arches of the viaduct and leads to this back slip road. The arches were occupied by various businesses including a large bonded (alcohol) warehouse. This gave the road its nickname of "Whiskey Alley".