Now almost twice the size, it includes two additional chill chambers, a larger loading area, new offices and staff facilities. More than 70 full-time staff are now employed at the site.
Managing director Nicholas Marston said: "The new packing facilities will increase our production capacity and efficiency, reinforcing Berry Gardens' leading position as a key supplier to UK supermarkets."
A cooperative wholly owned by UK growers, Berry Gardens has 30 per cent share of the UK soft-fruit market. Professor David Hughes retired as non-executive director last month after 25 years with the company.