Ashley Hutchings credits Pegg with being the musician who began the technique of playing jigs and reels on the bass, rather than just a supportive bass line, which was subsequently adopted by most British folk rock and even folk punk bassists. All this was obvious on the 1970 tour of Britain and America (including support for Jethro Tull), recordings from which surfaced on the "Live at the L.A. Troubadour" album (1977). His first album with the group, "Full House" (1970), showed more technically accomplished playing from the band, showing Pegg's musical influence on the group. On joining the band Pegg had moved his family from Birmingham and into the former pub, the Angel in Hadham, Hertfordshire along with other group members and their families. This became the theme for the title track of the next album "Angel Delight" (1971), for which Pegg received his first writing credit. On the next album "Babbacombe Lee", a folk-rock opera masterminded by Swarbrick, he played a much greater role, contributing to seven of the fifteen tracks. The next album "Rosie" contained three of his contributions, including the song "Peggy's Pub" a statement of a lifelong ambition. In 1971 when Simon Nicol and Dave Mattacks left the band, Pegg and Swarbrick were the only remaining members and, as a succession of personnel came (or returned) and left again over the next five years, their partnership kept the band running. Some of these performers, like Sandy Denny and her husband Trevor Lucas, were acknowledged songwriters and as a result, although he still made contributions and took part in collaborations, Pegg's song-writing took a back seat to his instrumental and organisational skills. After the financial disaster that followed the "Rising for the Moon" (1975) tour, which prompted Denny, Lucas and Jerry Donahue to quit the band, Pegg became increasingly determined for the group to take control of their finances and direction and took over a larger responsibility. Pegg and Swarbrick renewed contact with Nicol in 1975 forming a low key trio, Three Desperate Mortgages, which toured student venues across Britain. With only Pegg, Swarbrick and replacement drummer Bruce Rowland left, they persuaded Nicol to rejoin the band during the "Gottle O'Geer" album sessions. The remaining quartet signed up with Vertigo, and produced two albums, "The Bonny Bunch of Roses" (1977) and "Tipplers Tales" (1978).