Boris Johnson was elected London mayor at the beginning of May
An Oxfordshire councillor has been selected by the Conservatives to fight the Henley by-election when London Mayor Boris Johnson steps down as MP.
John Howell, a former partner at City accountant Ernst and Young, was chosen from a shortlist of three.
Mr Howell said it was a "huge privilege" to have been selected for the Oxfordshire constituency.
New London mayor Boris Johnson is yet to formally stand down from his seat, which he has held since 2001.
A cabinet member on Oxfordshire County Council, Mr Howell was made an OBE in 2000.
The Tories said he would be a champion for the constituency.
"A successful businessman, he is leading the way in ensuring the county council is run more efficiently and in opposing the bulldozing of the green belt," a spokesman said.