Complex sentence: After several false starts, on 30 July 1833 Brunel announced the construction of a railway from Bristol to London, which became the GWR, and intended it to be the best railway in the country.
Split into simpler sentences: After several false starts, Brunel announced the construction of a railway from Bristol to London on 30 July 1833. This became the GWR, and he intended it to be the best railway in the country.