That solely depends on the overall standing classification that every single National Federation have each season on UEFA's club ranking.
Those who are classified higher have more clubs participating than those Federations in lower positions.
The UEFA club ranking is based on the performance of all participating clubs every season. The more victories each club earn, the more points they contribute to their Federation and more clubs are allowed to play.
in england, 4 teams can qualify to the champions league.
The top two teams in the Spanish La liga qualify for the Champions League.
4
Only one team from the Scottish Premiership can qualify for the UEFA Champions League each season. The champions of the league are granted a place in the Champions League qualifying rounds.
In the English Premiership, the top two automatically qualify for the Champions League proper, whilst third and fourth place teams qualify for the Champions League qualifying rounds. The fifth team qualifies for the Europa League.
4 or 5
4 teams qualify for the Uefa Champions League. In the premier league table, whoever finished 1st and 2nd goes through to the Champions league group stages automaticly, whilst whoever finished 3rd and 4th have to play in the 3rd round of the qualifing stage against a team from a different country. If they win....... They get to join the other teams in the group stages of the champions league, if they lose, they are out of it.
The first and second place teams automatically qualify. Third and Fourth place teams go into a Champions League qualifying round. Fifth place qualifies for the UEFA Cup.
In every season, the top four teams in the English Premier League qualify for the champions league. However, If a team did not qualify at the end of a season, but wins the champions league, then the team in fourth gets knocked out of their qualifying spot for the champions league winners.
Four clubs are chosen each year.
I think it is two, and it is Celtic and Glasgow rangers each year.
there are three preliminary groups every year before the champions league starts, that are played during the summer: in the 1st 28 teams play 2 matches h&a, in the 2nd the 14 teams that won in the previous group challenge other 14 teams, and in the 3rd the remaining 14 teams are put together with other 18 teams; the 16 teams that win the 3rd group are put together with the 8 teams that got the better results in their own leagues, an so it is reached the number of 24, which are divided in 8 groups of 4 teams, that is when the Champion's League really begins.