The father of three children found dead at a south London property was described as "a valued colleague" by his employer Investec.
Investec, where Gary Clarence works as the director of investment banking for healthcare, said in a statement that the firm's thoughts are with him.
"We do not know the facts at this time but our thoughts are with the Clarence family," it said.
"We are doing all that we can to help Gary and his eldest child and ask that their privacy is respected."
The company's website states that Mr Clarence was based in their US office for 18 months, before he returned to the UK, where he has specialised in the healthcare sector since 2004.