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Extractor duct - 130mm hole bore through 230mm blockwork

Hello, I am looking for someone who will be able to cut a 130mm hole for a 120mm extractor duct though 230mm hollow core blockwork. I am looking for someone with a 130mm diamond bore cutter, as I would prefer a clean circular cut (drilling many smaller holes and chipping is not an option here else I will do that myself). Site is easily accessible through kitchen area or on the outside of the wall. Please supply quotes online if you can. I would prefer not to organize a bunch of site visits before settling on a tradesperson :) Cheers Thank you in advance for you assistance. Will post photos