The chairman of a well-known independent record company wrote to John Perkins, to praise a member of staff at the Chiswick store for helping to detect cancer.

Dear John Perkins,

I am writing to tell you how grateful I am for the skill of your employee Shahis Siddique. I had an eye test there, and he noticed a mark in my eye. He referred me to a consultant.

It was cancer but because it was caught early, radiotherapy has an extremely high success rate.

In the words of the consultant: ‘Your optician probably saved your life’!

I had had a sight test at another optician just three months previously. You should be very proud to have him as a member of your team.

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