Following figures of speech/literary devices have been used in the poem:

1. Assonance: Assonance is the repetition of vowel sounds in the same line. For example, the sound of /o/ in “Dull would he be of soul who could pass by” and the sound of /i/ in “All bright and glittering in the smokeless air.”
2. Consonance: Consonance is the repetition of consonant sounds in the same line such as the sound of /l/ in “splendour, valley, rock, or hill;” and the sound of /h/ in “And all that mighty heart” and /s/ sound in “Ships, towers, domes, theatres, and temples lie.”
3. Enjambment: It is defined as a thought in verse that does not come to an end at a line break; instead, it rolls over to the next line. For example,“Dull would he be of soul who could pass by A sight so touching in its majesty.”
4. Hyperbole: Hyperbole is a device used to exaggerate a statement for the sake of emphasis. Wordsworth has used this device in the opening lines poem as he exaggerates the beauty of London city. For example, “Earth has not anything to show more fair: Dull would he be of soul who could pass by.”
5. Imagery: Imagery is used to make readers perceive things involving their five senses. For example, “The river glideth at his own sweet will” and “This City now doth, like a garment, wear.”
6. Personification: Personification is to give human qualities to inanimate objects. In the fourth line “This City now doth, like a garment, wear”, the city is personified.
7. Simile: It is a figure of speech used to compare an object or person with something else to make the meanings clear to the readers. For example, “This City now doth, like a garment, wear”.

Composed Upon Westminster Bridge