Ian Helmore a Dragons Den winner visited and spoke to the GCSE Year 10 Business studies group.
He spoke to the students about his journey and how he came up with the Steri-Spray idea, an ultra-violet light in showers and taps that kills Legionnaires' disease bacteria.
Inventor of Steri-Spray, Ian Helmore appeared on Series 5 of the BBC2 venture capital investment programme Dragons' Den, securing funding and the backing of Deborah Meaden and Theo Paphitis.
An investment of £145,000 was made by the two Dragons in exchange for a 40% share in the company.
This investment together with their advice has enabled Ian to fully design, develop and launch an innovative and potentially life saving range of shower products to service the commercial shower market.
His device is saving lives in the UK and soon will be doing the same in the USA if the investment can be found.
He gave the students excellent advice with regards to starting their own businesses, but also told them to work really hard at school and take advantages of all opportunities presented to them.
His own children came to Knights Templar and he commented what an excellent school it was and is.
'Students are courteous and polite,' he said. ' a great deal of respect for their teachers, which is not often the case at other schools I have visited.'