Why not call Nikon UK, or email them & ask the question? If you live in Spain, there is the benefit of the 2 year warranty regarding service, whilst I believe that UK still is offering one year.
Buying in Spain, & requiring service in the UK I am sure only the first of the warranty will be validated.
You also need to be careful with returns, as I contacted Holland regarding the LS focus issue. Whilst they were happy to repair the camera, they would only send it to an address in Holland, & not to Spain.