JAMIE O'Callaghan reckons London Broncos' rugby league/football mash-up training session could be a secret weapon behind them beating St Helens.

The Broncos took part in a half football-half rugby league session with Gillingham FC on Tuesday to publicise their game against Warrington Wolves at Priestfield next month.

Before that, St Helens are the visitors to the Twickenham Stoop for tomorrow's Super League clash, and O'Callaghan, who was a football before being introduced to rugby league at Feltham Community College, reckons the change will have done Broncos good.

He said: “It was a good laugh and made a refreshing change, going somewhere new and trying something different, and we definitely feel more relaxed going into the next game.

“I've always been a Chelsea fan, but I was involved in the academy at Brentford and used to watch them when Martin Allen, who is now Gillingham manager, was manager there, so it was good to get involved with him.

“I fancied myself as a footballer when I was younger, and Mike Bishay definitely should have been one, but I'm not sure about the Aussie lads – they've all got two left feet.

“A couple of the Gllingham lads weren't bad at rugby league either. They had the pace and the skills, but I'm not sure about their physicality.”

O'Callaghan was on the score sheet, along with two tries apiece from Kieran Dixon and Luke Dorn, as Broncos avoided a banana skin by knocking Featherstone Rovers out of the Challenge Cup 24-12 last weekend, booking a tie against Bradford Bulls in the next round.

He said: “They were well drilled, and last year they knocked out Castleford and nearly beat Leeds, so we knew what they were capable of, but our fitness and skills told in the last 20 minutes.”

Having already been involved with the Irish national side, O'Callaghan has been told be is nailed on for a squad place for the Rugby League World Cup later this year.

He added: “The coach has told me I will be in the initial squad, so I need to keep up my level of performance to make sure I'm involved. With Ireland in the same group as England, I could even come up against a fellow Bronco, if the likes of Keiran Dixon and Tony Clubb are involved.”