Below you can read two references from triple Olympic dressage champion Anky van Grunsven and the Glock-team with world champion dressage Edward Gal.
Anky van Grunsven: ‘For many years Roy shoes horses at my Anky Education Center. He started as a student of Rob Renirie but for more than ten years he is self-employed. He shoes some of my horses to full satisfaction and he shoes horses of my training students as well.’

Glock-team Edward Gal, Hans Peter Minderhoud and Nicole Werner: ‘For more than ten years we work together with Roy. Roy knows his job and is flexible. He is very professional and we have confidence in his work. We hope to work with him for many more years.’