In 1989, as Peter and Diane prepared to produce their first bottle of wine for their eldest daughter's wedding, they chose to name the wine "Cariad," which means "love/to be loved" in Welsh. The intention was to commemorate the joyous occasion and the name Cariad Wines became synonymous with their product. Peter and Diane dedicated themselves to promoting and selling the wine.
In 1999, Three Choirs vineyard in Gloucestershire approached Peter and Diane with an enticing proposition. After conducting blind tastings and trials, Peter and Diane made the decision to move the wine production off-site to the Three Choirs winery. This collaboration allowed them to expand their distribution and establish their wines in reputable stores like Howells in Cardiff during the 2000s.
Peter and Diane successfully operated Llanerch Vineyard until 2005, when they made the decision to sell the property. Listed for £2.1 million, the sale included a six-bedroom farmhouse, a renowned 6.5-acre vineyard producing between 12,000 and 35,000 bottles of wine annually, converted farm buildings dating back to the 19th century that provided self-catering accommodations, a visitor center with a tasting room and coffee shop, as well as various amenities like landscaped gardens, picnic areas, woodland walks, carp lakes, and an indoor heated swimming pool. The property encompassed a total of 20 acres, offering diverse opportunities for leisure and agricultural activities.