England and Wales have both made it out of Group B and into the last 16 of Euro 2016, but their opponents in the next round are both still to be determined.
Here we run down who they could face, where and when the ties will take place, and who that might pit them against later in the tournament.
Who will England play next?
Roy Hodgson's men will meet the runners-up from Group F on Monday at 8pm in Nice, but their opponents could be any one of four teams as that group is the closest of all.
Perhaps the tastiest potential match would be against Portugal, although it would require Cristiano Ronaldo's men to get something against surprise leaders Hungary when they meet on Wednesday.
Iceland, who currently sit second in the group and are the least populous nation at Euro 2016, and Austria are the other possible opponents.
Bigger dangers lurk on that side of the draw if England progress from their last 16 tie, with France likely quarter-final opponents and Germany or Italy likely to await in the semi-finals.
Who will Wales play next?
Chris Coleman's team will meet a third-placed team in the last 16 in Paris on Saturday at 5pm.
Their opponents are likely to come from Group A or Group D, which would mean Albania or either the Czech Republic, Croatia or Turkey, while there is a one in 15 chance they could face a team from Group C, which looks set to be Northern Ireland.
Croatia are perhaps the team Wales would most wish to avoid, having impressed against Turkey and the Czech Republic, albeit conceding a late equaliser in the latter fixture.
Should they progress, Wales would be on course to face either the winner of Group F – Hungary, Iceland, or Portugal – or the runner-up in Group E – currently set to be Belgium – in the quarter-finals, with Spain likely to last-four opponents.