Dutch builder, primarily known in the UK for coaches, both separate bodies and integrals. They do build buses though, and have even built double-deck service buses for both the UK and Ireland in the past!
Donoghue's 05-CN-6236, O'Connell St Dublin, 28-10-2017
Seen operating as a Bus Éireann hire-in om the 109X from Cavan, this Van Hool tiunrs into Abbey St. I understood that the revised Navan network was designed to reduce such instances, but the evidence is that this is not the case.