(Sharecast News) - Specialist recruitment company Hydrogen Group announced on Tuesday that it has signed an extension for a further five years as a supplier of 'change management staff' to an unnamed FTSE 100 retail bank.The AIM-traded firm said the supply would now be through a third-party vendor appointed by the bank to streamline their processes.Hydrogen said it had been providing such services for around 10 years, adding it was pleased to continue to support the bank in achieving its objectives."We are delighted to have extended supplying our largest client, which demonstrates both the strength of our relationships and our ability to deliver high-quality solutions," said Hydrogen Group chief executive officer Ian Temple."The contract renewal supports the continued trading momentum within the business."