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 3rd May 1757
Subscription Purse of 200 Guineas over the Round Course for 4-year-olds the property of Jockey Club Members, each horse to carry 8st
1. Chestnut filly owned by Lord Chedworth
2. Bay colt owned by the Duke of Hamilton
3. Chestnut colt owned by Sir James Lowther
4. Brown colt owned by Mr Blake
5. Brown colt owned by Sir Matthew Featherston(haugh)
6. Brown colt owned by Sir William Wolseley
7. GALLANT, grey colt owned by Mr Vernon
8. Brown filly owned by Lord Gower
9. Chestnut colt owned by Mr Curzon
10. Grey filly owned by Sir John Moore
11. Chestnut colt owned by the Duke of Devonshire

Thursday 5th May 1757
Second Subscription Purse of 200 Guineas, over the Beacon Course, for horses the property of Jockey Club Members, each horse to carry 8st 7lbs
1. JASON, grey horse owned by Sir James Lowther
2. SPECTATOR, bay horse owned by Mr Panton
3. JESSAMY, chestnut horse owned by Mr Jenison Shafto
4. BRILLIANT, dun horse owned by Mr William Croft
5. WHISTLE JACKET, chestnut horse owned by Lord Rockingham
6. FORESTER, chestnut horse owned by Mr Vernon
7. STATELY, chestnut mare owned by Sir Richard Grosvenor