Theresa May's promised plan for Brexit will not be published before February at the earliest, MPs have been told.
Asked if the plan would be issued in January, Brexit Secretary David Davis said: "It won't be next month" - adding that a number of policy decisions were still to be made.
Among those areas was issues relating to justice and home affairs, Mr Davis told the Commons select committee scrutinising the exit process.
Mr Davis also admitted that Britain's government does not know whether it could halt the process of leaving the European Union once it has begun but it does not intend to change course in any case.
"We don't intend to revoke it. It may not be revocable. We don't know," Davis said.
British government lawyers have argued that once the formal divorce talks on leaving the EU are triggered there is no going back. But EU leaders have suggested Britain could still change its mind.
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