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 26th April 1763
Subscription Purse of 100 Guineas over 4 miles of the Round Course for 3-year-olds the property of Jockey Club Members, each horse to carry 8st
1. Brown colt owned by Sir James Lowther
2. Chestnut colt owned by Lord Rockingham
3. DOUBTFUL, dun colt owned by Mr Richard Vernon
4. MILFORD, black colt owned by the Duke of Kingston
5. PERO, chestnut colt owned by the Duke of Marlborough
6. COWSLIP, bay filly owned by Lord Grosvenor
7. PRIZE, dark brown colt owned by Lord Orford
8. Bay colt owned by the Duke of Northumberland
9. Grey filly owned by Lord March
10. Bay colt owned by Mr William Croft
11. MINIKIN, grey colt owned by Mr Greville

Thursday 28th April 1763
Second Subscription Purse of 100 Guineas, over the Beacon Course, for horses the property of Jockey Club Members, each horse to carry 9st
1. DORRIMOND, bay horse owned by Mr Greville
2. Dun horse owned by Sir John Moore
3. ENGINEER, bay horse owned by Mr Fenton
4. HORATIUS, bay horse owned by Lord Bolingbrooke
5. TRAPLIN, bay horse owned by the Duke of Kingston
6. BOSPHORUS, bay horse owned by Lord Portmore
7. FEARNOUGHT, bay horse owned by Mr Warren