Clarkson died on 12 October 1934.
The circumstances of his death were considered sufficiently suspicions that an autopsy on his body was performed by the prominent pathologist, Sir Bernard Spilsbury, although he found no conclusive evidence of foul play.
Clarkson was buried in a modest grave in the Actors' Acre in Brookwood Cemetery in Surrey, England.

Clarkson's will, dated 1929, left the bulk of his estate to William Cooper Hobbs, previously a solicitor's clerk, but a convicted blackmailer.
The two had had a long association; in 1922 Clerkson had helped Hobbs attempt to flee the country when he was facing serious criminal charges.
But the attempt failed and Hobbs was arrested at Gravesend while attempting to board a ferry to Rotterdam Hobbes was convicted and sentenced to two years in prison for attempting the blackmaail Hari Singh for £150,000
However the will was contested by Max Brezinski and his daughter who possessed a 1931 will in which Clarkson left his estate to them.
Brezinski was a stage magician who performed under the name of Fred Brezin.
The Probate court decided in their favour in July 1935.
In March 1938, Hobbs and a former solicitor, Edmond O'Connor went on trial, accused of together forging Clarkson's will.
Both were convicted; Hobbes was later sentenced to five years in prison and O'Connor to seven.

In 1937, insurance companies filed suits against Clarkson's estate for the recovery of money paid to him when alive.
Investigation showed he had made nine claims for fire damage over the course of 40 years.
A 1931 fire insurance claim was proved fraudulent and a 1933 claim was refused.
This led to the trial of another man, Leopald Harris.
Harris was an insurance assessor and a former associate of Clarkson, who had organised a gang that carried out arson for the purpose of insurance fraud.
Clarkson died on 12 October 1934. The circumstances of his death were considered sufficiently suspicions that an autopsy on his body was performed by the prominent pathologist, Sir Bernard Spilsbury, although he found no conclusive evidence of foul play. Clarkson was buried in a modest grave in the Actors' Acre in Brookwood Cemetery in Surrey, England.
Clarkson's will, dated 1929, left the bulk of his estate to William Cooper Hobbs, previously a solicitor's clerk, but a convicted blackmailer. The two had had a long association; in 1922 Clerkson had helped Hobbs attempt to flee the country when he was facing serious criminal charges. But the attempt failed and Hobbs was arrested at Gravesend while attempting to board a ferry to Rotterdam Hobbes was convicted and sentenced to two years in prison for attempting the blackmaail Hari Singh for £150,000
However the will was contested by Max Brezinski and his daughter who possessed a 1931 will in which Clarkson left his estate to them. Brezinski was a stage magician who performed under the name of Fred Brezin. The Probate court decided in their favour in July 1935. In March 1938, Hobbs and a former solicitor, Edmond O'Connor went on trial, accused of together forging Clarkson's will. Both were convicted; Hobbes was later sentenced to five years in prison and O'Connor to seven.
In 1937, insurance companies filed suits against Clarkson's estate for the recovery of money paid to him when alive. Investigation showed he had made nine claims for fire damage over the course of 40 years. A 1931 fire insurance claim was proved fraudulent and a 1933 claim was refused. This led to the trial of another man, Leopald Harris. Harris was an insurance assessor and a former associate of Clarkson, who had organised a gang that carried out arson for the purpose of insurance fraud.
Willy Clarkson