I work in the Dean Clough mills and have been down to the Design House 2 or 3 times recently. It’s next door to the more informal Viaduct Café. It’s not a bad place for a business lunch or meal out with the team — you can have bar meals or you can pay an extra £1 cover charge and have your meal in the main restaurant. Food is nice bar food — lovely big sandwiches and chunky chips. they also have good vegetarian selection. Think lunch was about £7.