26th April 1761 Sunday Went wth Mr Hall this day into four Countys Middlesex Surry Kent & Essex Greenwich Blackwall Bowbridge Bednell Green Hackney Lowlaton Epin Forrist and See the Earl of Finleys Gardens & House
Went Back by by Temple millns & Hackney Spt. 2/6
I don't know where Thomas and his friend started from as Thomas has not told us where he is living.
Greenwich - this part will have looked much the same to Thomas as to us today
Google wants him to go through the Rotherhithe Tunnel to get between Greenwich & Blackwall. But that wasn't open until 1908. I think he probably took a ferry from Greenwich to the Isle of Dogs. An 18th century map shows Horse Ferry House opposite Greenwich on the Isle of Dogs. This ferry is still commemorated in road names, East & West Ferry Roads and Ferry Street and a pub... The Ferry House
After Blackwall, Thomas went on to Bow Bridge which is over the River Lea, not the Thames.
From there on to what we call Bethnal Green, of course, but this it not an example of Thomas's often dodgy spelling - It was called Bednall Green and there was a large house which served as a lunatic asylum there in 1761... more about the history of the area and a picture of the house here.
Lowlaton is Leyton. Thomas has been there before.
Epping Forest stretched from Forest Gate to Epping so I think we can assume that Thomas touched the Forest in the South, nearer the former than the latter.
Temple millns must be Temple Mill Lane which is not far from Leyton tube station but I guess looked greener than it does today (google maps shows a bleak mostly concrete landscape).
I've drawn a complete blank on the Earl of Finlay & his house.