FT: Holders Chelsea need extra time but beat West Ham 3-1
FT: Tottenham come from 2-0 down to beat second-tier Sheffield United with stoppage-time goal
FT: Third-tier Wolves beat second-tier Reading in main shock of round
Selected other results: Man Utd 5-0 Newcastle, Durham 0-4 Man City, Arsenal 5-1 Watford, Bristol City 0-1 Liverpool, lowest-ranked Luton 0-6 Brighton
Everton beat Aston Villa 3-0 on Saturday
Fifth round draw live on BBC Radio 5 Live's Monday Night Club from 19:00 GMT
Deanne Rose (70 mins)
The Leicester sub strikes! Derby make a real mess of clearing their lines from a corner and Deanne Rose is able to turn on it and blast in from close range.
Derby 0-2 Leicester
Yuka Momiki fires in a shot from that close-range free-kick but it's well charged down. We are into the final quarter.
Danielle Carter (68 mins)
Danielle Carter adds her name on the scoresheet for the home side.
A corner ball swung into the six yard box causes chaos in the Moneyfields defence and as the ball drops to the ground the Lionesses forward is on hand to bundle it over the line.
London City Lionesses 3-0 Moneyfields
Changes for both sides incoming.
London City Lionesses swap first goalscorer Ruesha Littlejohn and Emma Mukandi for Connie Schofield and Leannne Cowan.
For Moneyfields Kimberley Fuller is replaced by Kiera Heslam.
Derby 0-2 Leicester
Not something you see every day as Leicester are awarded an indirect free-kick inside the Derby penalty area. Bemused looks all round.
Derby 0-2 Leicester
Leicester look well in control now as Derby tire. The visitors send on the sprightly Deanne Rose now as well to add to their options.
In the only 14:00 GMT kick-off that is still being played, second-tier Birmingham City have taken a 2-1 lead away at third-tier Burnley.
Claudia Walker's goal on the stroke of half-time of extra-time, finishing from close range after Chloe Yuri's effort hit the bar.
London City Lionesses 3-0 Moneyfields
It should be said that the three goals between the sides very much flatters London City and is rather harsh on Moneyfields.
The visitors enjoyed the best of the first half and for the most part have defended rather well in this game.
In the end though the fourth-tier outfit will be left wondering what might have been if they had taken those first half opportunities.
Janice Cayman (58 mins)
A second goal and a lovely goal! Leicester keep the ball for an age, and when the ball is pulled back from the right Janice Cayman is in space to stab a shot in at the far post.
Chantelle Boye-Hlorkah (58 mins)
It is three now!
Chantelle Boye-Hlorkah cuts inside from the right wing and curls a fantastic effort into the far top right hand corner.
Nothing Rose Kite could do about that, and it looks like the tie is beyond Moneyfields now.
London City Lionesses 2-0 Moneyfields
Almost three!
A lovely through ball into the channel sets Chantelle Boye-Hlorkah through.
She takes the ball in her stride, cuts inside the defender, but her shot drifts wide of the target and into the side netting.
Grace Neville (54 mins)
Image source, Getty ImagesA chaotic episode in the Moneyfields defence results in them concedinga second goal of the afternoon.
Goalkeeper Rose Kite rushes out to stop a breakaway, her initial challenge is successful but the home side recycle the ball into the right channel, followed by a cut back.
Grace Neville has the easiest task to slot the ball home, which she does.
Derby 0-1 Leicester
Leiceter move the ball well, at pace, down their left and Lena Petermann is almost on the end of it once again. The number nine has been a real menace this afternoon.
Derby 0-1 Leicester
Up and running once more in Derbyshire as the sun sets. Can Derby fight back?
London City Lionesses 1-0 Moneyfields
A bright start to the half from Moneyfields as they hunt that all important equaliser.
They've set up camp on the edge of the London City box.
London City Lionesses 1-0 Moneyfields
Back under way at a chilly looking Princes Park.
After a strong first half showing can fourth-tier Moneyfields get themselves back into this one to force extra time or even penalties?
Image source, Getty ImagesWolves' Beth Merrick celebrating during the FA Cup fourth round win at Reading
The first major shock of the day has seen third-tier Wolverhampton Wanderers win 2-1 away at second-tier Reading thanks to late goals from Beth Merrick and Destiney Toussaint in the final 20 minutes of the tie.
Reading had gone ahead in the first half through Madison Perry and led for 37 minutes before Merrick's leveller.
Wolves are the second third-tier side to have booked a place in the last 16 following a 6-1 win for Nottingham Forest at Plymouth Argyle earlier this afternoon.
They could be joined by another third-tier side in Burnley. Millie Ravening's penalty in the fifth minute of second-half stoppage time has put them level against second-tier Birmingham City, a tie which has now gone to extra time.
Other scores from around the FA Cup fourth round (games with no WSL side):
Burnley 1-1 Birmingham City (gone to extra-time)
Reading 1-2 Wolverhampton Wanderers (full-time)
FT: Tottenham 3-2 Sheffield United
Tottenham have won their tie against Sheffield United, despite being 2-0 down with just over 20 minutes to go.
Rosella Ayane has added a third after two goals from Beth England, chipping her shot over Fran Stenson in the final minute of extra-time.
Spurs survived the scare from their second-tier opponents and will be in the fifth-round draw on Monday night.
Derby 0-1 Leicester
A close, tight FA Cup game in Derbyshire with Lena Petermann's header the difference so far.
Third-tier Wolverhampton Wanderers have taken a 2-1 lead away at Reading, with just minutes to go.
The Royals, who were relegated from the WSL last season, had led, but Destiney Toussaint has put the Old Gold ahead in the 88th minute.
Elsewhere, Birmingham City remain ahead at Burnley.
Other scores from around the FA Cup fourth round (games with no WSL side):
Burnley 0-1 Birmingham City (14:00 GMT start)
Reading 1-2 Wolverhampton Wanderers (14:00 GMT start)