Does the premier inn have DVD player's?

No , and you cant even connect 1 to the tvs in the rooms even though the connections are in the back of the tv.

Actually some of them you can! London Docklands at Excel East have new Samsung 40" HD Smart TVs after a refurb which have hdmi ports etc. The one in the room I stayed in even allowed you to change the source from the remote. (they had some HD Freeview channels too). I took my Xbox 360 and used that with no issues.

The older Philips ones did but you needed to unlock hotel mode or have a remote which would let you change source.

Theres also one at Queen Eleanor in Northampton which rents out DVD players and DVDs to guests to use in the room (well they did when I stayed) as they only had 5 channels, again I took my xbox when working there for a week.