Herbert Rowse Armstrong - The only British solicitor hanged for murder

 Herbert Rowse Armstrong was the only British solicitor to be hanged for murder. He was hanged on 31 May 1922. Armstrong poisoned his wife with arsenic. He attempted to poison another solicitor. That's one way to deal with the competition. Fortunately, the other solicitor was suspicious, and tests proved he had been poisoned.

At first, it was thought that Mrs Armstrong had died of natural causes, but her body was exhumed, and it was found to contain poison. The police found Armstrong had small amounts of arsenic conveniently wrapped in sachets of paper. Armstrong claimed he was planning to use the arsenic to kill weeds in his garden. The jury was not impressed.