We've recently used Ayrton for five new sash windows on our loft conversion and are really pleased with them
. They were great throughout the process and the team who did the fitting were hard-working, courteous and helpful (even trimmed back our out-of-control wisteria that was out of reach for those of us who don't climb on roofs regularly!). We chose Ayrton again having been very pleased with other new windows they supplied 5 years ago. Not sure about Accoya but they certainly use durable timber - I think it's redwood.