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. In 1764 the Jockey Club introduced the Newmarket Challenge Whip restricted to Jockey Club Members, a race run over the Beacon Course with each horse carrying 10 stone. The prize was a Whip, which contains hairs from the tail of the famous racehorse Eclipse, given to the Jockey Club by King Charles II. The 3 races provide vital evidence confirming membership of the Jockey Club.

Newmarket Challenge Whip over the Beacon Course was not contested in 1765

Tuesday 12th May 1767
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. PACOLET (5/1), grey colt owned by Lord Grosvenor
2. LASH, bay colt owned by the Duke of Kingston
3. PRESTO (4/6 fav), bay colt owned by Sir Charles Sedley
4. AULETES, bay colt owned by Mr Wentworth
5. MIDAS, brown colt owned by Sir Charles Bunbury
6. CONSTANTINE, brown colt owned by Duke of Northumberland
7. SCAMPERANTIPOS, bay colt owned by Mr Jenison Shafto
8. FAIR PLAY, brown colt owned by Mr Ward
9. Grey colt owned by Mr Meynell
10. FLORA, grey filly owned by Mr Burlton
11. Chestnut filly owned by Lord Gower

Thursday 14th May 1767
Second Subscription Purse of 100 Guineas, over the Beacon Course, for horses the property of Jockey Club Members, each horse to carry 9st
1. OTHO (3/1), bay horse owned by Lord Ossory
2. TARTAR, bay horse owned by the Duke of Bridgewater
3. CHESHIRE DICK, chestnut horse owned by Mr Meynell
4. NARCISSUS, chestnut horse owned by Duke of Northumberland
5. TURF (1/2 fav), bay horse owned by Lord Bolngbroke