The Great Western before the Great Western - 1826

I was recently contacted by someone asking if I could help them find anything about the London and Bristol Rail Road. This wasn't an early form of the Great Western Railway that came to be promoted in the early 1830s, but another project that planned in 1826 that never came to fruition. Indeed, searching through the on-line nineteenth century newspapers only turned up one article as follows from the Bristol Mercury of Monday June 5 of that year:

If you have any more information on this project, please let me know!