Shane sent me an email stating they no longer provide building stone out of any of their quarries.
He also stated that Peter Bennie no longer operate Harlestone Quarry and Wroxton.

(Owned by Johnston Quarry Group)

sent an email and left a voicemail
details updated

No response via phone, I left a message on their mobile and I have sent an email.
I have sent a follow up email.
Details updated.