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 8th May 1759
Subscription Purse of 100 Guineas over the Round Course for 4-year-olds the property of Jockey Club Members, each horse to carry 8st
1. SALLY, chestnut filly owned by Mr Naylor
2. JACK, grey colt owned by Lord Portmore
3. PIDGEON, bay colt owned by Lord Gower
4. Bay colt owned by Mr Swinburn
5. CREAM POT, dun colt owned by Sir Thomas Seabright
6. PLOW BOY, chestnut colt owned by Mr Greville
7. Bay colt owned by Sir Nathaniel Curzon
8. Grey filly owned by Sir Matthew Featherston(haugh)
9. Bay filly owned by Sir John Moore
10. Brown filly owned by Mr Hutchinson

Thursday 10th April 1759
Second Subscription Purse of 100 Guineas, over the Beacon Course, for horses the property of Jockey Club Members, each horse to carry 9st
1. ATLAS, brown horse owned by the Duke of Devonshire
2. CARELESS, chestnut horse owned by Mr Warren
3. SWEEPSTAKES, brown horse owned by Lord Gower