The Jockey Club Plate, not to be confused with the Newmarket Town Plate which was first run on the Round Course in 1666, was restricted to Jockey Club Members and run at Newmarket annually. The earliest record of a Jockey Club Plate was in 1753 when two were staged two days apart. The first, for 4-year-olds, was run on the Round Course on Tuesday 15th May 1753 and won by Beau Clincher owned by Lord Gower, while 2 days later a second subscription Plate for 100 Guineas was contested on Thursday 17th May 1753 and was won by Crab owned by Captain Vernon. The races provide vital evidence confirming membership of the Jockey Club.

Tuesday 4th May 1762
Subscription Purse of 100 Guineas over 4 miles of the Round Course for 4-year-olds the property of Jockey Club Members, each horse to carry 8st
1. PROSPERO, chestnut colt owned by Mr Greville
2. DOCTOR, bay colt owned by Mr Jenison Shafto
3. GINGER-BREAD, bay colt owned by Lord Bolingbrooke
4. Bay filly owned by Sir James Lowther
5. Bay filly owned by Sir John Moore
6. Bay colt owned by Lord Gower
7. VESTAL, bay filly owned by the Duke of Ancaster
8. Grey filly owned by the Duke of Devonshire
9. TROOPER, bay colt owned by the Duke of Grafton
10. Bay colt owned by Lord Rockingham
11. LARDON, bay filly owned by the Duke of Richmond
12. MISS, bay filly owned by Lord Portmore
13. Bay filly owned by Mr William Croft
14. Chestnut gelding owned by Lord Waldegrave
15. BABOON, bay colt owned by Lord Richard Grosvenor
16. TARTAR, chestnut colt owned by Lord March

Thursday 6th May 1762
Second Subscription Purse of 100 Guineas, over the Beacon Course, for horses the property of Jockey Club Members, each horse to carry 9st
1. PANGLOSS, chestnut horse owned by Lord Grosvenor
2. BABRAM, bay horse owned by Sir James Lowther
3. ATLAS, brown horse owned by the Duke of Devonshire
4. MOLLY LONGLEGS, bay mare owned by Lord Bolingbrooke
5. FORTUNATUS, bay horse owned by Mr Richard Vernon
6. SPORTSMAN, bay horse owned by Mr Warren