Yeah the oil was a mess. Looked liked a milkshake.
The breakdown recovery guy pretty much gave me the full diagnosis. He said the head gasket had gone and that it was common with "Rovers". It was going to happen sooner or later and there was nothing we could have done to prevent it.
He said we need to get the manifold checked to make sure it is not damaged. If it's damaged then the engine is stuffed and it's a new engine or the scrap heap. If it's not damaged then a new head gasket will be required.
He guestimated around £150 for the parts alone for a new head gasket and a lot of time and £££ on labour therefore a lot of money to get it fixed. Pretty gutted as the best option would seem like the lesser of the two evils financially but we're still going to be hit hard in the pocket..