The site of the church may have been occupied by a small chapel or Saxon hermitage.

The church, as we see it today, was built at intervals over a period of 800 years. 
No exact date can be put on the early construction. 
The first record appears in 1115, so it may be assumed that that part which is now the chancel is later 12th century. 
There was originally a crypt beneath, filled in later. 
The nave is possibly 13th century, built at the time of the Magna Carta.
The South aisle is believed to have been added in the 14th century. The tower is mid-15th, when the Tudors and Plantagenets fought each other for the crown of England. 
The small door in the South wall of the chancel is 15th century and was the entrance to the Lord of the Manor’s pew.
The George Inn, to this day a popular public house in Abbots Leigh, was once ecclesiastical property. 
It was known in those days as ‘Church House’. 
Visitors and worshippers at the chapel coming from afar made use of its stables and hospitality. It was also used for Church festivities. Close by the Inn were the parish stocks, mentioned in the Vestry Book in 1816 as having been renewed.
In 1845, the parish Bedminster and the chapels were returned by the Diocese of Bath and Wells to the Diocese of Bristol. 
It appears that at this time, the parish was poorly served by the Mother Church. 
Joseph Leach, in his ‘Churchgoer’s Rural Rides’ in 1847, states that ‘gaving no permanent incumbent’, worshippers never knew from one Sunday to another who was going to take the service. Leach also described the chapel as ‘venerable and plain’ outside while the interior he considered to be in a condition of ‘primitive and almost rude simplicity’.
There was no record of an organ, but Leach mentioned a balcony under the tower where musicians played. 
It all sounds pleasingly bucolic; however, all this was to change.
There was no record of an organ, but Leach mentioned a balcony under the tower where musicians played. 
It all sounds pleasingly bucolic; however, all this was to change. 
A year later, in 1848, the chapel was gutted by fire.
The nave suffered most, the wooden roof of the chancel burning merrily, then collapsing down on the pews, pulpit and balcony. 
The fire was seen soon after Mattins on February 21st. 
The village turned out to fight the flames and someone was sent to Bristol for a fire engine, a horse-drawn one which arrived three hours later.
As a result of their exertions, the tower and chancel were saved. 
The Miles family paid for much of the repairs. 
Various alterations were made at the time, including the addition of the North aisle, the dormer windows and the vestry. 
The balcony was not replaced, but an organ was installed.
Little has changed since the rebuilding after the fire. 
Most important, perhaps, in 1852, Abbots Leigh became a parish in its own right. 
The first Vicar, the Reverend Charles Morgan, moved into the residence which is now known as the “Glebe House’/ The present Vicarage down the road was built in 1924.
Another fire occurred in the church in 1972. 
By a coincidence, the date was the same as the previous fire, February 23rd! 
The consequence of this fire was not nearly so serious; the organ was destroyed and one or two pews; the roof was badly scorched.
In 1976, the churches of Abbots Leigh and Leigh Woods were united under one Vicar. 
This union between the parishes has been a great success, bringing the two villages together, sharing services and activities.

In 1985, the vestry was extended to include a kitchen and a lavatory, bringing piped water into the church for the first time.
Holy Trinity remains to this day a thriving, well cared for and much-loved church.
The Churchyard – The octagonal stone steps supporting the War Memorial are thought originally to have been the base of an early Preaching Cross.
There is an ancient font beside the South porch which may have been used for christenings from the earliest days of the church, until replaced by the existing one which is 19th century.

Principal Monuments Inside the Church