Complex sentence: Two shops have however been opened in the village catering to the tourist market, one of which is the National Trust's own shop, whereas the other, known as The Henge Shop, focuses on selling New Age paraphernalia and books.
Split into simpler sentences: Two shops have however been opened in the village catering to the tourist market, one of which is the National Trust's own shop. The other, known as The Henge Shop, focuses on selling New Age paraphernalia and books.