The reciprocal agreement will see between 50 and 60 traditional British products stocked in a select number of Corte Inglés stores across Spain.
The products will include specialty teas, a range of biscuits and Tesco brand cereals including granola.
In return Tesco will expand on a pilot scheme to stock some 48 products under El Corte Inglés label including sherry vinegar, sliced meats and extra virgin olive oil.
"We're always looking to offer customers new and exciting products as part of our world food range," said a statement sent to The Local from Tesco.
"We're currently trialling products from El Corte Inglés in a small number of stores and are looking forward to seeing how customers respond."
The deal is just the latest sign that Spanish palates are warming to British food, once broadly dismissed as tasteless mush.
Where once specialist overseas stores could only be found in expat colonies on the Costas, where retired Brits stocked up on Marmite, teabags and jars of Branston's pickle, now such products appear in the gourmet world food sections of many large supermarkets.
UK discount chain Poundland has opened outlets across Spain stocking well-known British brands under their "everything for €1.50" slogan.
Named Dealz, the Spanish franchise marked the first expansion by Poundland into continental Europe.