Thomas Richard West was the eldest son of Richard West, 7th Baron De La Warr (28 October 1430 – 10 March 1476), and Katherine Hungerford (d. 12 May 1493), daughter of Robert Hungerford, 2nd Baron Hungerford of Heytesbury, Wiltshire, by Margaret Botreaux, daughter of William de Botreaux, 3rd Baron Botreaux, of Boscastle, Cornwall.

West served in an expedition to France in 1475.
He was said to be aged 19 or more at his father's death on 10 March 1476, and was granted special livery of his lands on 1 September of that year.

He was knighted by Henry VII on 18 January 1478, and on 4 March 1486 was granted lands in Sussex after the attainder of the Duke of Norfolk.
In 1487 he was granted an annuity of £20 by Peter Courtenay, Bishop of Winchester.
In 1489 he was made a Knight of the Bath at the creation of Henry VII's eldest son, Arthur Tudor, as Prince of Wales.

He was one of the 'chief commanders' of an English force sent to Flanders in 1491 to assist the Emperor Maximilian against the French, and in 1496 was the 'chief commander' of forces raised to suppress the Cornish Rebellion, commanding a retinue at the Battle of Deptford Bridge.
He was installed as a Knight of the Garter on 11 May 1510.
He participated in the sieges of Therouanne and Tournai in 1513, and was made a knight banneret after the French defeat at the Battle of the Spurs on 18 August 1513.
He attended Mary Tudor at her marriage to Louis XII of France in 1514, and attended Henry VIII at the Field of the Cloth of Gold in 1520.
In 1524 he was appointed High Sheriff of Surrey and Sussex.

West died 11 October 1525, and was buried at St. Mary's Church, Broadwater, Sussex.
He left a will dated 8 October 1524, proved 12 February 1526.
The will of his widow, Eleanor (née Copley), dated 10 May 1536, was proved on 14 November of that year.
She was buried with him at Broadwater.
Thomas Richard West was the eldest son of Richard West, 7th Baron De La Warr (28 October 1430 – 10 March 1476), and Katherine Hungerford (d. 12 May 1493), daughter of Robert Hungerford, 2nd Baron Hungerford of Heytesbury, Wiltshire, by Margaret Botreaux, daughter of William de Botreaux, 3rd Baron Botreaux, of Boscastle, Cornwall.
West served in an expedition to France in 1475. He was said to be aged 19 or more at his father's death on 10 March 1476, and was granted special livery of his lands on 1 September of that year.
He was knighted by Henry VII on 18 January 1478, and on 4 March 1486 was granted lands in Sussex after the attainder of the Duke of Norfolk. In 1487 he was granted an annuity of £20 by Peter Courtenay, Bishop of Winchester. In 1489 he was made a Knight of the Bath at the creation of Henry VII's eldest son, Arthur Tudor, as Prince of Wales.
He was one of the 'chief commanders' of an English force sent to Flanders in 1491 to assist the Emperor Maximilian against the French, and in 1496 was the 'chief commander' of forces raised to suppress the Cornish Rebellion, commanding a retinue at the Battle of Deptford Bridge. He was installed as a Knight of the Garter on 11 May 1510. He participated in the sieges of Therouanne and Tournai in 1513, and was made a knight banneret after the French defeat at the Battle of the Spurs on 18 August 1513. He attended Mary Tudor at her marriage to Louis XII of France in 1514, and attended Henry VIII at the Field of the Cloth of Gold in 1520. In 1524 he was appointed High Sheriff of Surrey and Sussex.
West died 11 October 1525, and was buried at St. Mary's Church, Broadwater, Sussex. He left a will dated 8 October 1524, proved 12 February 1526. The will of his widow, Eleanor (née Copley), dated 10 May 1536, was proved on 14 November of that year. She was buried with him at Broadwater.
Thomas West, 8th Baron De La Warr