Whilst my knowledge isn't UK based:
I would tell you to "go-around" if you were close to or below the minimum vectoring altitude (assuming radar environment).
If you were above the MVA and I could stop you at or above the MVA, I would say. "Cancel Approach clearance Maintain A052" or similar; then when you've got over the shock I'll tell you why I'm taking you out and how I'm going to get you back in.