nˌɑːt lˈɔŋ ˈæftɚ, ɪn wˈʌn θˈaʊzənd ˈeɪthˈʌndɹɪd sˈɪksti sˈɪks, ɪt wʌz kənsˈɪdɚd bˈɛst tə hæv ðə nˌævɪɡˈeɪʃən ʌvðə hˈoʊl ɹˈɪvɚɹ ˌʌndɚɹ ɐ sˈɪŋɡəl mˈænɪdʒmənt, sˌoʊ ðə tˈɛmz nˌævɪɡˈeɪʃən kəmˈɪʃən wʌz sˈʌbsuːmd baɪ ðə tˈɛmz kənsˈɜːvənsi.
Not long after, in 1866, it was considered best to have the navigation of the whole river under a single management, so the Thames Navigation Commission was subsumed by the Thames Conservancy.