Thames Valley Police said
"Last Thursday (June 19th) Oisin Murphy, aged 29... was charged by postal requisition with one count of driving a motor vehicle while over the prescribed limit of alcohol and one count of failing to cooperate with a preliminary test at the roadside," police said in a statement.
"The charge is in connection with a single vehicle road traffic collision around 12:05 am on Sunday, April 27th this year when a grey Mercedes A Class left the road and crashed into a tree."
The Irishman, four times British flat racing's champion jockey, is due to appear at Reading Magistrates' Court on July 3rd.
Police warned the public not to speculate or spread misinformation on social media as it is a live investigation.
A spokesman for the British Horseracing Authority (BHA) said: "The BHA is aware of an update issued by Thames Valley Police this afternoon regarding Mr Oisin Murphy.
"We are now seeking to gather as much information as possible in order to consider what, if any, implications there are as a result of this development."