Having replaced them at the top of National Three (South), London Scottish travel to title rivals Ealing for what could be a season-defining game on Sunday.
Ross Yiend notched a hat-trick of tries as Scottish hammered Dings Crusaders 43-0 on Saturday, while Ealing could only draw.
Ledua Jope, Rory Damant, Gareth Swales and Grant Livingston also scored, while James Brown converted four.
Hot on their heels in third are Rosslyn Park, who won 18-11 at Chinnor.
Chris Simmons and Amo Tauialo ran in their tries, while Dylan Pugh kicked two penalties and a conversion.
But Richmond are fourth from bottom after a try, a penalty and a conversion from Matt Hart, plus another try from David Burr, was not enough to prevent a 39-15 defeat at Bridgwater & Albion.