An interesting half-hour just passed. Had a call from the owner of a local garage who has booked in for an eye test with us. He'd been recommended to us by a customer of theirs who was on her way to us but was dropping her car into the garage first.
She arrived just as he was on the phone booking his appointment! It turns out we had been recommended to her by one of our existing customers after she'd struggled finding frames that suited her elsewhere.
She actually ended up with seven frames to choose from and had a short list of three (which she's sent photos of to her hubby for approval).
As she was leaving she told me how happy she was with the service, the time spent with her and the advice she was given. You can't beat word of mouth recommendation.