Complex sentence: After 5 years Gordon left to set up own company called C&G Cutter Grinding Services in Blackburn, the business initially started with 2 people and after 4 years they were employing 20 people all doing high precision grinding.
Split into simpler sentences: After 5 years Gordon left to set up his own company called C&G Cutter Grinding Services in Blackburn. The business initially started with 2 people and after 4 years they were employing 20 people all doing high precision grinding.