Blackfriars Bridge is just off the right of the image, but Charles Bell Birch's 1896 bronze statue of Queen Victoria, also Grade II Listed, is visible, standing at the north end of the bridge. The brown-and-white commercial building behind is Blackfriars House (designed by Frank Troup, built 1913-16, now Grade II Listed), to the right of the new entrance to London Blackfriars railway station.
Blackfriars Millennium Pier floats on the River Thames to the left (upstream) of the bridge, served by river buses primarily for commuters; there's limited traffic outside business hours.
M.V. Salient, at the left of the foreground, offers river cruises, as do (I presume) the smaller boats moored in mid-channel, but the historic HMS President against the north bank now acts as a conference venue, plus offices occupied by media companies.
Launched in Renfrew in 1918 as an anti-submarine Q-ship, HMS Saxifrage was moored here permanently in 1922, inheriting the HMS President name and role of a 1832 Royal Navy Reserve drill ship. One of the last three remaining Royal Navy warships of the First World War, now on the National Register of Historic Vessels, she was the nominal 'home ship' of all Navy personnel serving in London, until being sold to private owners in 1988.
Behind the President's rear mast is the 1886 Tudor Gothic building designed by Sir Arthur Blomfield for Sion College, founded in 1630 as a social centre and library for the clergy of London. However, the College sold the Grade II Listed building, now converted to offices, in 1996, with its famed theological library being divided between Lambeth Palace and the Maughan Library of King's College London.
Next door, highlighted by evening sunlight, is the 1883–1987 purpose-built home of the City of London School (now in nearby Queen Victoria Street, with this building occupied by an investment bank). Designed by Henry Davis and Barrow Emanuel and opened by the Prince of Wales (the future Edward VII), the landmark building appeared in the 1968-89 Thames Television ident, during arguably the peak period of 'mass' TV viewing in the UK.
Next to the right, curving around the corner, stands Unilever House. Designed in the Neoclassical Art Deco style by James Lomax-Simpson (a member of the Unilever Board), and/or architects John J. Burnet & Thomas S. Tait (precise degrees of credit remain ambiguous), the now-Grade II Listed building was constructed 1929-33 on the site of Bridewell Palace, once occupied by Henry VIII but later a poorhouse and prison.
At the rear left of the image is CityPoint, London's 13th tallest building, at 127m (35 storeys). Built in 1967 as Britannic House, and then a mere 122 m tall (refurbishment in 2000 added 5 m), it was the first building in the City of London to exceed the height of St Paul's Cathedral.
In front of that, one can see the arched roof of the 82 m, 18-storey Alban Gate (aka '125 London Wall') designed by Sir Terry Farrell and built 1990-92.
Behind Unilever House one can see the 12th tallest building in London (and 4th in the City of London), Broadgate Tower, a 165 m, 33-storey 'skyscraper' over the entrance to Liverpool Street station at the northeastern corner of the City.
The height of buildings nearer the middle of the city are (were?) more restricted, to preserve clear views of landmarks such as St. Paul's Cathedral. This regulation was the result of the construction of the green-roofed Faraday Building, at the extreme right of this image, in 1932, obscuring the riverside view of St Paul's. Designed by A.R. Myers, it was the purpose-built home for London's first telephone exchange (which had already opened in 1902), on the site of 'Doctors' Commons', the obsolete "College of Doctors of Law exercent in the Ecclesiastical and Admiralty Courts".
Have I missed anything? Oh, yeah....
Even if it wasn't being beautifully highlighted by the late afternoon light, I suspect you might notice the dome of St Paul's Cathedral, on Ludgate Hill at the heart of the City of London. A church dedicated to St. Paul has occupied the site since 604, but Sir Christopher Wren's English Baroque masterpiece, the fourth cathedral on the site, was built after the 1666 Great Fire of London, being (officially) completed in 1711. The tallest building in London until 1962, St Paul's remains the second largest (by volume) church in the UK, with one of the highest (at 111 m tall) and 'most perfect' domes in the world. Aside from being a true icon of London, it's the nearest the UK has to a 'national' church, having been the venue of key funerals, weddings and commemorations of British history.