England skipper Chris Robshaw could become the country's third captain of the professional era to be overlooked for a Lions tour following Phil de Glanville (1997) and Steve Borthwick (2009).
With Wales' Sam Warburton pitched as the bookies' favourite for the British and Irish Lions captaincy, he may have seen off competition from Irish pair Paul O'Connell and Brian O'Driscol.
It is thought there will be few surprise selections, and none of the players will know about their Lions selection until tour manager Andy Irvine reads out the names during a mid-morning press conference.
The ten-match tour begins in Hong Kong against the Barbarians on June 1, followed by games in Australia, including three Test match appointments with the Wallabies.
More top news
Newly released emails to a Muslim campaign group reveal Mohammed Emwazi felt "controlled" under the watch of the security services.
Five members of the Armed Forces have been granted operational honours and awards in recognition of their service.
The Conservative peer said he was 'shocked' that the law had been vetoed by the Liberal Democrats.