Noel underwent training for ordination at Chichester Theological College, an Anglo-Catholic theological school.
At first he was refused ordination into the Church of England because of his theological views: he had been offered a curacy at All Saints Church in Plymouth, but on the day on which he was scheduled to be ordained, the Bishop of Exeter refused to ordain him.

In 1894, he was ordained deacon in the Diocese of Chester and became a curate in Flowery Field, Cheshire, but left following parishioners' objections to his socialism.
 He also spent time as a curate at St Philip's in Newcastle, under W. E. Moll.
 Also in 1894, he married Miriam Greenwood.
In late 1904 he became assistant priest to Percy Dearmer at Primrose Hill.

In 1910, he became the vicar of Thaxted, Essex presented by the patron of the living Daisy Greville, Countess of Warwick, who was herself a socialist.

Within the church at Thaxted, Noel hung the red flag and the flag of Sinn Féin alongside the flag of Saint George.
This led to the "Battle of the Flags" with students from Cambridge leading attacks on the church to remove the flags.
Eventually, in 1922 a consistory court ruled against displaying the flags and Noel obeyed the ruling.

He founded the socialist organization Catholic Crusade in 1918, which had some impact in the origins of Trotskyism in Britain.

On Noel's perspective on the Middle Ages, which was similar to that of William Morris and John Ruskin, Reginald Groves wrote:
He himself had drawn much inspiration from the Middle Ages only because he felt that this period, despite many oppressions, had a certain vigour and freedom which expressed itself in communal life; and he borrowed much from the ancient English uses and ceremonials for the worship at Thaxted.
But he adapted the ideas and usages to contemporary needs, and he formulated his rediscovery to make of it an outward expression of the newly aroused modern movement for social justice.
Noel underwent training for ordination at Chichester Theological College, an Anglo-Catholic theological school. At first he was refused ordination into the Church of England because of his theological views: he had been offered a curacy at All Saints Church in Plymouth, but on the day on which he was scheduled to be ordained, the Bishop of Exeter refused to ordain him.
In 1894, he was ordained deacon in the Diocese of Chester and became a curate in Flowery Field, Cheshire, but left following parishioners' objections to his socialism.  He also spent time as a curate at St Philip's in Newcastle, under W. E. Moll.  Also in 1894, he married Miriam Greenwood. In late 1904 he became assistant priest to Percy Dearmer at Primrose Hill.
In 1910, he became the vicar of Thaxted, Essex presented by the patron of the living Daisy Greville, Countess of Warwick, who was herself a socialist.
Within the church at Thaxted, Noel hung the red flag and the flag of Sinn Féin alongside the flag of Saint George. This led to the "Battle of the Flags" with students from Cambridge leading attacks on the church to remove the flags. Eventually, in 1922 a consistory court ruled against displaying the flags and Noel obeyed the ruling.
He founded the socialist organization Catholic Crusade in 1918, which had some impact in the origins of Trotskyism in Britain.
On Noel's perspective on the Middle Ages, which was similar to that of William Morris and John Ruskin, Reginald Groves wrote:
He himself had drawn much inspiration from the Middle Ages only because he felt that this period, despite many oppressions, had a certain vigour and freedom which expressed itself in communal life; and he borrowed much from the ancient English uses and ceremonials for the worship at Thaxted. But he adapted the ideas and usages to contemporary needs, and he formulated his rediscovery to make of it an outward expression of the newly aroused modern movement for social justice.
Conrad Noel