 The collections and displays grew for another forty years, until the temporary pavilion could no longer meet the museum's needs.In 1978, the museum was re-located to "Blandford House", the former Co-operative Wholesale Society Headquarters for the Northern Region.Designed by Oliver, Leeson & Wood in 1899, the building had been the distribution centre for over 100 Co-op stores across the region, and contained extensive warehouse space and offices.