The lyrics of "London Town" describe "ordinary people and everyday life in London. According to Beatles biographer John Blaney, it "presents a romanticized view of London; part reportage and part fantasy." Blaney elaborates that it combines "idealisation with acute observations of everyday street life." Music professor Vincent Benitez compares the effect of "quixotic" presentation of the people of London with that of the McCartney penned Beatle song "Penny Lane." Benitez notes a theme of loneliness throughout the lyrics, as the singer feels alienated from the Londoners he describes. "London Town" is a soft rock song. It is in the key of E major. The introduction to the song obscures the tonic by beginning phrases in different keys, but the key of E major is established at the end of the introduction and is then used to begin the first verse. The fourth and final verse is also based on the key of E major but the middle two verses begin and end on the key of A major, which is the subdominant of E major. Benitez notes that besides using the same key, verses 1 and 4 are also linked in that they describe the singer meeting colorful Londoners and they end with the phrase "Silver rain was falling down/Upon the dirty ground of London Town." Besides sharing a key, verses 2 and 3 share a more pessimistic viewpoint—the singer's frustration at his inability meet ordinary people and the emptiness felt by an unemployed actor. These two middle verses also end with the phrase "Well, I don't know." The two bridges and the outro are also in A major. Benitez interprets the tension between the keys of E major and A major throughout the song as representing the "uncertainty felt by the protagonist, who is unsure about where to go in London."
Critical reception
Author Chris Ingham praised "London Town" as one of the best tracks on the album, stating that it was "full of the most sensitive pop synthesizer touches". Billboard Magazine described it as a "melodic, atmosphere ballad" and particularly praised McCartney's vocal. McCartney biographer Peter Ames Carlin called it "a pleasantly spaced-out perspective on city life". Tom Waseleski of the Beaver County Times recognised the song as having "more substance" than other of McCartney's soft rock tracks. Henry McNulty of the Hartford Courant praised it for its "fine, clear harmonies" and "sprightly, inventive melody," recognizing it as one of the few decent songs on the album. Author Tim Riley calls it "willfully sulky". Beatles biographers Roy Carr and Tony Tyler regard "London Town" as an "anachronism", with several Beatle-esque touches, including opening chords that sound like "Blackbird" and a chord progression similar to that in "The Fool on the Hill". Paul Sexton of udiscovermusic.com described it as a "laid-back, beautifully-harmonised and reflective piece about the British capital."
