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Help me choose unis for Physics!

I'm an international student from Bangladesh who's applying to UK unis this year. My first 3 choices are Cambridge, Imperial, UCL.

Now, I can't decide which unis should I select as the other two.

The ones I'm considering are:

Manchester: Great reputation for Physics, great alumni, higher international reputation but seen as less prestigious in the UK.

Durham: Great reputation for Physics (in terms of teaching, not research), seen as more prestigious in the UK but low international rankings, no great physics alumni like Manchester

KCL: Physics department is not as famous as Manchester/Durham but seen as more prestigious? Is it better for employability and graduate prospects than the other two?

Please help me decide!