Postpublished at 19:45 GMT
Chris Eubank Jr says it's "bare-faced lies" that Senior was paid to come to the first fight.
Chris Eubank Jr and Conor Benn 2 face the media in London
Bitter rivals contest rematch on Saturday at Tottenham Hotspur Stadium
Eddie Hearn using placards after Eubank Jr banned him from speaking
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Charlotte Coates
Chris Eubank Jr says it's "bare-faced lies" that Senior was paid to come to the first fight.
He says: "I had no idea I would be sitting in front of you guys with this man by my side. I found out a couple of hours ago. I still don't know what he might say or what he might do."
Time for Chris Eubank Jr to speak...
Eddie Hearn has a huge grin on his face as he reads up a board saying, "Conor Benn is always perfect".
Chris Eubank Jr laughs and says it's "embarrassing".
Now over to Matchroom's Eddie Hearn. He's got Silent Night playing and is holding up boards with words on them so Chris Eubank Jr can't interrupt him.
Incredible.
Chris Eubank Jr's promoter Ben Shalom is first to speak.
"It feels like the Chris Eubank show all over again. This is the moment I believe he cements himself as a great in British boxing.
"We know the fights beyond and the big nights we want to bring to this country."
Image source, MatchroomThe first fight is going to take some topping, isn't it?
It was absolute cinema when Chris Eubank Sr stepped out the car with the Benns watching backstage.
The fight itself was everything we expected and wanted it to be.
Now time for Chris Eubank Jr and Senior.
They both get the grand announcement with 'Simply The Best' playing in the background.
Image source, MatchroomConor Benn is the first man making his way to the stage.
He's got a lovely leather jacket with his own initials on it.
Image source, MatchroomNigel Benn is already seated on the stage, but of course, Chris Eubank Sr wants to make his arrival when his son is being announced.
Bobbie Jackson
BBC Sport at the Pelligon
News conferences can be a little underwhelming but it's never dull when Chris Eubank Jr and Conor Benn are in the same room.
Back in February we had the now notorious egg-slap incident, in April we saw Matchroom's Eddie Hearn talked off stage by Eubank and there was more squabbling between the two teams in September.
I spoke to former cruiserweight world champion Tony Bellew earlier this week and he believes "a line will be crossed" at some point this week as both fighters look to get in the right mindset.
We'll find out shortly if he's right.
The legend that is Michael Buffer is now centre stage and talking to the crowd.
He's about to announce Chris Eubank Jr and Conor Benn.
Bobbie Jackson
BBC Sport at the Pelligon
Trainer Brian McIntyre - better known as Bomac - was absent from Chris Eubank Jr's corner in April after "carelessly" bringing a gun into the UK, but he has overseen this camp after guiding Terence Crawford to a historic win in September.
Crawford beat Saul 'Canelo' Alvarez to become the first male fighter in the modern era to hold undisputed titles in three weight divisions.
A pretty good trainer to have by your side.
Azim v Scoby
It got a bit rowdy in Adam Azim and Kurt Scoby's face-off.
Scoby clearly trying to rattle Azim!
Image source, Matchroom
Image source, Matchroom
Bobbie Jackson
BBC Sport at the Pelligon
Even without any belts on the line, this is the kind of event that draws big names.
As well a hundred or so media, plenty of boxers have packed into the Pelligon on the banks of the Thames tonight.
WBC lightweight champion Caroline Dubois, former cruiserweight world champion Chris Billam-Smith and heavyweight Dave Allen are among those waiting to see what unfolds in this news conference.
And here's Chris Eubank Jr.
He's on the other side of the stage with his dad.
Can't wait for this!
We're back!
Conor Benn is having a little dance as he waits at the steps to come on stage. Not quite sure why he's wearing gloves.
The second fight between Chris Eubank Jr and Conor Benn will be conducted at the middleweight limit of 11st 6lb (160lbs). Like the first encounter, there is a rehydration clause, meaning neither man can put on more than 10lb between Friday's weigh-in and Saturday morning.
Eubank was fined £375,000 after missing the weight by 0.05lb for the first fight but was on weight on fight day. Benn says he bought a Rolls Royce with this money.
Friday weights for first fight:
Saturday weights for first fight:
Image source, Getty Images
Bobbie Jackson
BBC Sport at the Pelligon
Conor Benn said he was too emotional during the first fight with Chris Eubank Jr but has cut a different figure so far this week.
Benn looked so relaxed at yesterday's open workout. After some light pad work with trainer Tony Sims, he convinced his father Nigel to step into the ring for some shadow boxing.
A 61-year-old Nigel showed he still had a bit of speed and agility as he kept Conor on his toes.
Image source, Getty Images
Image source, Getty Images