The car has recently developed a can only be described
as a rumble like sound from the front when turning left
or right at about 30mph upwards.

It also does it in a straight line from about 55mph. The sound
is kind of like a whining rumble if that makes sense, a sort of
wub wub wub sound.

Any ideas? Tie rod ends,wheel bearing...?

 

Sounds like bearing or drive shaft, get it diagnosed.

 

Will get my mechanic to have a nosey. I am currently looking
for a forester so may just sell it cheap as a project.