Worcester had to come from 17-0 down at half time to beat Bedford and maintain their record winning run and stay top of the Championship table.
An early Jake Sharp drop-goal and two converted interception tries from Viliami Hakalo and Pat Tapley had Dean Ryan's men on the back foot.
But Worcester replied with four second-half tries for a 22nd straight win.
Sam Smith, Ryan Mills, Sam Betty and Tom Biggs scored as Andy Symons kicked three conversions and two penalties.
|Warriors march on|
|Worcester and Bristol both booked their place in the four-team Championship play-offs last weekend - with still seven fixtures of the campaign remaining.|
|The Warriors' next league fixture is at home to Plymouth Albion on 7 March, followed by their British & Irish Cup semi-final at home to Leinster A the following Friday.|
The fourth try, to earn Worcester their bonus point and their 15th successive Championship victory, did not come until the 81st minute.
But that simply capped a barnstorming finish as, with just six minutes to go, Worcester still trailed 17-11.
After winger Smith's unconverted early second-half try, two Symons penalties had edged the visitors back to within range of Bedford.
But it was not until the 74th minute when Symons converted stand-off Mills' late try that the Warriors led for the first time.
Three minutes later flanker Betty crossed and winger Biggs' added-time effort kept Worcester a point clear of second-placed Bristol.
Bedford: Kerr, Tapley, Staff, Hakalo, Pritchard, Sharp, White, Moss, T. Harris, Currie, Howard, Gulliver, Blanchet-Dufresne, Fenton-Wells, Vandermolen.
Replacements: Clare, Parilli-Ocampo, Boulton, Tupai, Thompson-Stringer, Veenendaal, Jones.
Worcester: Howard, Smith, Stelling, Symons, Biggs, Mills, Arr, Bower, Annett, Schonert, Williams, O'Shea, Thomas, Betty, van Velze.
Replacements: George, Rapava-Ruskin, Daniels, Percival, Mulchrone, Mieres, Hammond.