The Bulls saw off seventh-placed Swindon Supermarine 2-0 at Edgar Street in front of another excellent crowd of 2,640.
They saw Mills open his and the Bulls account from the penalty spot after 26 minutes and seal victory with a second on 66 minutes.
Tiverton Town maintained second spot after a 2-1 win at Cossham Street against sixth-placed Mangotsfield United.
Owen Howe after 13 minutes and then Nick Hurst eight minutes from time, were the Tivvy marksmen – Ryan Batten`s reply not arriving until four minutes into stoppage time.
Taunton Town are third and a brace from Jordan Rogers after 25 and 39 minutes proved enough at Wordsworth Drive to see off Yate Town and take the points.
Salisbury FC moved into fourth spot as a consequence of their 3-1 win at the Ray Macc against Paulton Rovers and Evesham United`s surprise home defeat by lowly Slimbridge.
A crowd of 619 saw Tom Whelan after 19 minutes, Eddie Perrett right on half-time and Tommy Wright on 64 minutes, give the Whites a three-goal cushion that Nathan Legge reduced by one two minutes from time.
Evesham led through Elliot Kennedy`s 29th minute goal – but that lasted barely a minute as Jack Sklenar immediately equalised. Slimbridge then broke Eveshamk hearts with a goal in the first minute of stoppage time from Mason Lewis.
Bideford improved their outside top five hopes with a 2-0 home win over Wimborne Town with goals from Will Tucker after five minutes and Sean Downing 14 minutes later.
Bottom side Bridgwater Town look down and doomed after a 3-0 Fairfax Park defeat against Barnstaple Town left them 14 points adrift of the safety-mark.
Ryan Turner after two minutes, Steve Holland on the half-hour mark and Turner again 15 minutes from time were the Barum scorers.
Second-bottom Wantage Town are also looking for snookers after going down 2-0 at Alfredian Park to Shortwood United, Steve Davies after 14 minutes and Liam Meredith right on half-time being the United scorers.
AFC Totton moved up to 18th after a 2-1 win at home against Didcot Town, Nat Sherborne and Charlie Gunson outgunning George Jeacock.
Joe Bates scored the only goal to earn Bishops Cleeve the points at home against Winchester City, while Josh Egan bagged a brace for Larkhall Athletic as they shared a 2-2 draw at North Leigh, whose Michael Hopkins and George Seacole were on the mark.
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