How to bleed cooling system in 1.6 blob?

Hi lads, im not sure if it needs bleeding or head gasket is gone... The radiator cracked and was replaced and there are air bubbles in the expansion bottle when the engine is on and the bottom hose stays cold. Is there any way to bleed it?

http://www.iwsti.com/forums/diy-mods-and-installations/126354-diy-engine-coolant-change.html

habe a read of that there
should help ya

Thanks, this will surely help