The 10 candidates who sat for the first fast-track NCPLH exam at Henley on April 23, all passed at the first attempt.
The next NCPLH fast-track course at HBS will be on June 25, 2008.
In total, 800 Thresher employees will undergo NCPLH training over the next 12 months.
The contract was awarded following an initial regional-based training programme where 50 Thresher staff members underwent the NCPLH examination process.
Philip Loring, head of Thresher central operations commented: "We are delighted with the new partnership which will enable us to provide NCPLH training across a wide geographical area, closely aligned to our store locations."