Chinnor continue to pile pressure on table-toppers Cinderford while Henley Hawks suffered a third straight defeat in a 13-try thriller away to Redruth on Saturday.
Second-placed Chinnor earned another bonus-point win as they ran out 24-19 victors over strugglers Old Redcliffians to move 15 points clear of Taunton Titans and Redingensians.
Henley’s 49-38 defeat leaves them seventh in the National League Division Two South Table on 63 points.
Henley take on Taunton in their next league fixture on March 3, while Chinnor welcome Barnstaple.
Elsewhere, Grove slipped to a 45-3 defeat at Marlow to make it 16 defeats for the season leaving them in 13th on 27 points, one place above bottom club Bicester who shipped more then a century to Old Patesians, losing 109-7.
At the other end of the table, fifth-placed Witney fell 34-29 at Swindon, while Oxford Harlequins were no match for in-form second-placed Banbury whose 36-17 win earned them 10 straight victories.
In the Southern Counties North, Gosford All Blacks remain 11th on 10 points after losing 34-5 at home to Aylesbury.
Mid-table Didcot defeated bottom club Abingdon 19-15 in the Berks Bucks & Oxon Premier as Wheatley lost to league leaders Slough, while Littlemore remain ahead of the chasing pack after beating Milton Keynes 54-13.