Most Peckham moves to Spain are not retirement to the costas. They're working-age creatives and young families moving for a slower life, a different cultural register, a property market that doesn't punish you for not being a hedge fund. We see lots of move-to-Granada-or-Sevilla rather than move-to-Marbella. We see family-with-school-age-kids choosing Bilbao for the bilingual Basque framework, or Madrid for the Lavapiés / Malasaña creative-quarter scene.
Spain runs on overland road from the UK — Channel crossing, France, the Spanish border at the Pyrenees, onward to your address. The drive is longer than a France move because Spain is bigger and further south, but the customs is comparable in workload to France. For the Costa-belt moves we usually offer sea-via-Bilbao or Santander as an alternative.
The hard part of a Spain move is rarely the move itself. It's getting your NIE (Número de Identificación de Extranjero) sorted before the move so your residency evidence stacks up at customs. NIE is the Spanish tax-and-residency ID and you'll need it for everything — bank, rental contract, utility setup, school enrolment. Most Peckham customers we work with arrange the NIE before the move date is locked in.