Head Gasket going.........

[pct corsa]

Get a manual
take the head off chances are the head will be ok if it hasnt over heated badly
if it has get it checked, your local vauxhall dealer will know an engine shop that will do thier work, ask them who


clean all the oily gunk n poo off that you can see put it back together with a £20 gasket set chances are the set will be the same as original
torque it down as it says in the manual put fresh oil / filter / water and antifreeze in thats all a mechanic will do any way
you will just be cutting out the garages profit
job done money saved