Premier League clubs are constantly buying and selling players in order to improve their chances of success, or respond to difficult circumstances. But what drives the decisions clubs take on which players to sign, how to invest their resources, and what represents good value?

West Ham in 2014/15 – Do Hammers now have the tools to score?

Can Allardyce bring goals to the Boleyn Ground?

The myth of the ‘British Premium’

New analysis shows that Premier League clubs do not pay more for “British” talent

Which part of the transfer market has your club been shopping in?

Is the Premier League really full of big spenders? Can clubs succeed without paying top prices?