The East London expat community in Spain clusters in specific places, and Torrevieja on the Costa Blanca interior is the biggest of them. Multi-decade Romford and east-London families, retirement-pipeline households, working-age families joining parents who went before — Torrevieja and the surrounding Costa Blanca interior villages (San Miguel de Salinas, Quesada, Rojales, the inland Orihuela area) are East-London-on-the-Spanish-coast. We handle plenty of Romford → Torrevieja moves and the community side runs almost automatically.
Our Romford → Spain work also covers the Costa Brava working towns above Barcelona (Calella de Palafrugell, Llançà, Tossa de Mar working stretches), Valencia outer suburbs and working-town hinterland, and parts of the Atlantic coast (Galicia / Asturias working harbours) where the Romford household is following grown children or family already settled.
Spanish customs is procedurally similar to French. We file the UK ToR1 with HMRC and the Spanish-side declaration with the Aduana. You provide the NIE (Número de Identificación de Extranjero — required for all administrative purposes in Spain), the residency-evidence pack, and the Spanish address contract.