It can be seen that only a couple of Sth High St areas have been excavated. Site 9 (out of above picture) was of particular interest in uncovering the remains of a Saxon hut. Most recently, continuation of the Roman road was discovered prior to building the new flats to the West of Site 4.
The whole area above Workhouse Dock (and indeed perhaps even the bed of the river alongside) could reveal exciting discoveries, as this was the most central connection between river and the market place. The alleyway, called Bradshaw's Yard after bakers based on the High Street, had a malthouse on its western side close to the riverbank as late as 1910.
Pre-Roman artifacts dating from Brentford's mesolithic settlements - and from all subsequent periods - have been unearthed in central Brentford, and we owe much to early collectors such as Layton and to enthusiasts such as Montague Sharpe, even before the more scientific excavations covered by Canham. As the most important crossroads for the whole of SE Britain prior to the Roman interference, there will be much yet to be found, if present authorities are suitably exercised over the matter.