Why not call these people and ask.
English Funeral Directors
Francisco Camero S.L., Avd. Juan Luis Peralta, 4, 29639
T: 902 200 625
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A point have made before, so forgive me.
If you are faced with repatriation of a body, and the expense is a problem, why not cremate in Spain and send / take the ashes to UK. There are no regulations which prevent postage or flying with human ashes.