Ashley Green used to have a Baptist church, situated down Hog Lane, which was a branch of Broadway Baptist Church in Chesham. It closed in the early 1900s. Anglican services started in the village school in 1872, led by Rev Pratt, vicar of St Mary's Chesham. Land for an Anglican church was given by
Lord Chesham. The architect was
G.E. Street and the contractor G. Cooper of
Aylesbury Buckinghamshire. The total cost of the building was over £2,000 with the
endowment being a further £6,000. The Church was built and endowed by the gift of Elizabeth Dorrien of
Clifton, Bristol, in memory of her sisters and dedicated to John the Evangelist on 31 December 1873, although it was already in use when it was dedicated. Ashley Green became a separate ecclesiastical parish in 1876. Newspapers and coins were built into the pillar adjoining the
pulpit. In 1980 the parish rejoined Chesham parish under a team ministry. The Church is built of local knapped black flints with
Bath stone dressings. There is a
bellcote with two bells. There is a boiler house, and the church was originally being heated by "Hayden's hot air apparatus", now disused. The porch is on the Northern side of the building the front of which is an oak moulded archway, the timber being framed in red bricks - herringboned. The roof is of plain clay tiles. St. John's has stained glass windows from various makers including
Burlison and Grylls, Kempe and Co.,
James Powell and Sons, C.E. Moore and A.L. Moore. Some of St. Johns' pews used to have a note on them that stated: The seats in this Church are entirely free and unappropriated. The Church Wardens look to the Congregation for the support through the offertory of the usual Church expenses. The bellcote has two bells, one of a diameter of and the other of a diameter of .
John Taylor & Co of
Loughborough cast them in 1874 and refurbished and re-hung in the early 1990s. In 2010 a kitchen and toilet was installed in the Church. In keeping with the tradition of the original builders, a time capsule that included a newspaper and a photograph of the congregation was buried under the floor of the kitchen. ==Population==