Complex sentence: During the 1980s and 1990s Rentokil Initial achieved growth of circa 20% each year under the leadership of then CEO, Sir Clive Thompson: during this period Rentokil Initial was voted "Britain's most admired" company.
Split into simpler sentences: During the 1980s and 1990s Rentokil Initial achieved considerable growth under the leadership of then CEO, Sir Clive Thompson. During this period Rentokil Initial was voted "Britain's most admired" company.