Q: Whine coming from the gearbox

1.6 petrol engine. The whining noise is coming from the gearbox and it shows only after it comes to operating temperature(after it has been driven for about 25-30 minutes). Is increases in pitch with the speed when in gear. If i push the clutch and still keep it in gear the noise drops in pitch but does not dissapear completly. During the drive the clutch pedal gets really stiff and gets hard to push. The strange thing is after I drove to Southend from Colchester(50 miles), when i truned the stearing wheel to park the car the whine increased in pitch(at low speed in 2nd gear). I had a look in the power steering tank and it was foaming. It was not hot(i kept my finger in there and it was not too hot). I.m only trying to get a quote and figure if it.s worth being fixed as the car needs the front shocks changed too... Thank you!

My car has 115507 miles.
My car has a manual transmission.