There are 20 teams in the Barclay's Premier League.
Australian football league
Arsenal were the Barclays Premier League winners in 2001.
The Premier League used to be called the Football League First Division but in 1992 the teams in the Premier League branched off from this championship. There is really no reason that the Premier League is called the Premier League other than Premier meaning good and needing to incorporate "League" in the name. Note that at the moment the Premier League is called the Barclays Premier League because of sponsorship (Barclays being the bank.)
There is no such thing as Barclays premiership. However, there is a league named Barclays Premier League which is a league from England. Their official website is Premier League.
There are 20 teams in the Barclay's Premier League, so the lowest possible finish is 20th place.
Sky Sports show the most Barclays Premier League matches!