I'm probably going to be wrong, but I'd predict the following:
George: Lea and Lisa
Glyn: Mikey and Nikki
Grace: Lea and Nikki
Imogen: Lea and Richard
Lea: Grace and Imogen
Lisa: Lea and Sezer
Mikey: Lea and Richard
Nikki: Grace and Sezer
Pete: Grace and Sezer
Richard: Grace and Imogen
Sezer: Lea and Lisa
That would mean:
George: 0
Glyn: 0
Grace: 4
Imogen: 2
Lea: 6
Lisa: 2
Mikey: 1
Nikki: 2
Pete: 0
Richard: 2
Sezer: 3
This would result in a Grace and Lea showdown!