With England having secured their place at the World Cup earlier this month, Northern Ireland, Wales and Scotland also remain in the hunt for 2026 qualification.
Scotland were unconvincing during the October international window but Hampden Park wins against both Greece and Belarus left them still in contention win Group C, with top spot likely to be decided by the visit of Denmark to Glasgow in November if the Scots can get a positive result in Greece prior to that.
But their 10-point tally means second place, and a shot at the play-offs in March, is already guaranteed.
Wales were well beaten in a friendly at Wembley in their first October international, manager Craig Bellamy having chosen a tough opponent ahead of his side's crucial qualifier at home to Belgium but a 4-2 defeat in Cardiff means the Belgians should wrap up top spot in Group J in November.
Second place remains in Wales' hands and they also have a fall-back of a play-off place via their Nations League record, something that Northern Ireland also have as potential insurance.
An important win at home to Slovakia in October also keeps second place in their group within reach despite a battling defeat against Germany in Belfast a few days later.