No.8 Irvin was born in Birkenhead in March 1984, and has represented the East Midlands.
At 6 foot 3 and 111kg, he has previously been with London Wasps, and his sporting hero is Scott Quinnell.
Towards the end of the 2004/5 season the Durham University player was also called up to the England Universities squad to play the Combined Services at Twickenham.
School/university: Bedford Modern School
Previous clubs: London Wasps academy
Nicknames: Gregor to some, ‘The Bear’ to others
Favourite TV show: 24, Simpsons, Neighbours
Favourite film: Wedding Crashers, Top Gun
Favourite music: Westlife, Shakira, Il Divo
Favourite book: Scarecrow
Favourite food: BBQ
Most like to meet: Hulk Hogan
Least like to meet: I’ll give anyone one chance, only one mind!
Best moment in rugby: Winning the BUSA final in 2004 with Durham University, beating France with England Students in Cahors, 2007
Best moment outside of rugby: Twilight bungee jump over Queenstown, NZ
Favourite place to visit: Buenos Aires
Team-mate least like to share a room with and why: Stu Walker, because of his horrific ‘tighty whities!’
I love: Klute
I hate: The A1 in rush hour