Margherita Taylor is helping an outgoing couple who hope their £400,000 budget will fund their escape to the wide, open space of south Wales - and also house their huge collection of superhero memorabilia. While in the region, Margherita heads to the Gower Peninsula and walks the marshland around the Burry Estuary with a sheep farmer whose family looks after their enormous flock in this challenging tidal landscape, producing lamb with a very unique provenance in the process.