Creaking front end. Ibiza mk 3

[Dorsetdiesel]

Any advice please. My car( Ibiza mk3 tdi 130 130000miles) has developed a creaking sound whilst driving from the front offside, mainly.
My local garage have looked at the car and renewed lower suspension wishbone arm bushes right and left. Also lower arm rear bushes.
Unfortunately this has not cured the noise.
They are unable to find the cause.
Anyone suffered a similar problem? Any solutions?
Thanks