Study the K1 plate in the Aerads, and you will see the Radar Vectoring Area, with the minimum altitudes allowed in the various bits of sky around the airfield. These are quite often well below the "MSA within 25 miles".
Without the RVA, you would have to turn final at quite a significant distance, and would be somewhat un- commerical.
A visit to your local friendly ATC approach room will clarify matters once and for all.
