Thomson Problems

pjacko

All

I am tring to claim against THomson for a 8 hour delay , My case went to the AESA (Spain) who found in my favour.
I received a letter back from Thomson who now say I should claim against Sunwing who operated the flight.It was however a package holiday from Thomson and the flight in question had Thomson on the side of the aircraft and all staff were dressed in Thomson uniform.
Could some one please advise my next step ?
Ie What some claims court to go though British,Spain or Dublin were the flight landed.
Also is it Thompson or Sunwing ?

Thanks