Marston's has bought Ringwood Brewery Limited for £19.2m.
As well as seven freehold pubs, the deal includes Ringwood's award-winning brands Ringwood Best Bitter, Old Thumper and Fortyniner.
The business currently supplies approximately 700 customers, predominantly in the South of England. Marston's said it was committed to the brewery, which would continue to brew all Ringwood brands as well as serve as a base for operations in the region.
The deal is in line with Marston's strategy of developing a portfolio of well-established premium regional beer brands to complement its core range led by Pedigree. It also fits well with Marston's recent purchase of the Eldridge Pope estate and strengthens the Company's position further in the South of England.
Alistair Darby, managing director of Marston's Beer Company, said he was delighted to welcome Ringwood to Marston's.
"We plan to develop its excellent brands as part of our strategy to meet consumer demand for premium ales with local provenance and heritage," he said. "Our premium ale business continues to deliver good, consistent growth and we look forward to replicating the success of the Jennings business through Ringwood in the South of England."