Allen denied any involvement. During the winter, Allen was part of an advisory group which looked for ways to revitalise county cricket. England won the 1957 Test series against the West Indies 3–0 and the 1958 series against New Zealand 4–0. But despite having what was regarded as a strong team, England lost 4–0 in Australia in 1958–59. The team was more successful afterwards, beating India 5–0 in 1959, defeating West Indies 1–0 in 1959–60 and South Africa 3–0 in 1960. Allen's final series as chairman was against Australia in 1961; England lost after making tactical mistakes in the fourth Test. In 1956, Allen became chairman of the MCC's Cricket Committee. The committee looked at ways to improve cricket, for example analysing whether reducing the size of the ball would help bowlers. Allen also began to pursue bowlers with illegal bowling actions; commentators were aware that this was a growing issue but no action had been taken, and Allen took the lead. Three English bowlers were no-balled for throwing in 1959 and another five in 1960. Geoff Griffin, a bowler who toured England with the South African team in 1960, was perceived to have a suspect action; when the bowler was no-balled for throwing in a Test match, the South African press suggested that Allen had played a prominent part. Later that year, Allen met Bradman, Australia's representative at the Imperial Cricket Conference (ICC); the pair wanted to ensure that bowling actions would be fair in future, and the ICC agreed to take action. When Australia toured England in 1961, no bowlers whose actions had been questioned were included in either team. Allen later took the lead in re-drafting the law on throwing. When the MCC abolished amateur status in cricket in 1963, making all cricketers paid professionals, Allen opposed the change. In 1963, he was appointed as MCC President. When his one-year term of office ended in late 1964, he was appointed to the influential role of MCC Treasurer, a position he filled until 1976. During this period, Allen instituted several reforms, including limiting the terms of office of key positions. He streamlined the MCC administration and recruited new people to key positions. Less successfully, he opposed the relaxation of eligibility rules for the County Championship to allow overseas players from 1968. He was heavily involved in a change in the relationship between the MCC and English cricket in 1968. The newly formed Sports Council required that, to receive financial support from the government, cricket be more democratically organised and not run by a private members' club.