How did Johann Christian Bach influence Wolfgang Amadeus Mozart in London?

During the Mozart family's 15-month stay in London, the young Wolfgang Amadeus Mozart met Johann Christian Bach, who was a leading figure in the city's musical life at the time.1

Mozart greatly respected Bach and learned much from him. Under Bach's influence, Mozart composed his first symphonies, including those cataloged as K 16, K 19, and K 19a. Furthermore, Bach’s music, which reflected the pleasant melodiousness of the galant or Rococo style, provided an Italianate grace that served as a formative influence on Mozart’s own developing musical language. This experience contributed to Mozart's quick and inventive response to the music he encountered during his travels, helping him acquire considerable fluency in the musical styles of his era.231