The Belles suffered a fifth defeat in a row after Wednesday night's 7-2 loss at home to Lincoln City.
Chloe Bethell put the Belles in front before the Imps turned the game on it's head inside the first half.
Emily Burgin's goal got Zoey Shaw's side back into the game after the interval, but three goals in eight minutes killed the game off for the visitors in the FAWNL Division One Midlands.
It was an even opening to the game with both sides trading blows early on, first Abbie Murrell fired over from distance before Bethell's shot from inside the box was blocked by visiting skipper Amy Kay.
Katy Thornley then found space in the Belles box however her shot across the face of goal was just wide of the far post, with Murrell then finding Johnson at full stretch to deny her a goal from the edge of the box moments later.
It would be a save that would seemingly prove crucial on 18 minutes as the Belles took the lead, with Bethell latching onto a long ball over the top before nicking it around Amy Halloran in the Imps' goal then dispatching into an empty net from 10 yards.
Lincoln restored parity eight minutes later with another long ball over the top catching out the Belles' defence leaving Thornley time and space to pick out the near post from close range.
The turn-around was complete on 34 minutes as a corner from the right was headed towards goal by a blue shirt before being poked in on the line by Kay to ensure that the visitors would head into the break level.
Murrell quickly set about increasing the visitors' lead shortly after the interval, first seeing a shot deflected into the arms of Johnson before shooting into the side-netting with another effort shortly after.
Thornley though was far more clinical and grabbed her brace five minutes after the re-start, her initial effort was saved by Johnson but she slotted home the rebound to double the Imps' lead.
Thornley was then thwarted by Johnson as she went in search of her hat-trick, with a brilliant low ball through the middle finding the Imps' no.8, though the Belles' stopper stood up well to save.
Murrell got her goal with 19 minutes remaining, turning Burgin before firing under Johnson to increase the lead further.
Burgin got a goal back for the Belles with 10 minutes remaining, with Nadia Khan's ball into the area being seized upon by the Belles' forward as she held off the challenge of Jeorgia Carr before firing past Halloran.
The comeback wouldn't prove to be on for long though as Murrell grabbed her second three minutes later, firing back with a brilliant half-volley from 20 yards which sailed over the head of Johnson.
A minute later the Belles would concede a penalty with Murrell brought down, Eden Pedersend stepped up to send Johnson the wrong way and make it six.
Murrell completed her hat-trick and the scoring two minutes into injury time with a fine turn away from her marker after Thornley's through-ball, and her curling effort into the corner put the seal on the Imps' three points at Oxford Street.
The Belles will look to improve their luck on Sunday as they travel to the home of Atherton Collieries to play Bolton Wanderers in the FAWNL Plate.