In a letter to the Daily Telegraph of 24 September 1863, Thring urged the formation of a "parliament [that] could sit with sufficient authority to issue a new code of laws" for football.

When the formation of the Football Association was announced shortly afterwards, Thring responded enthusiastically, sending voluminous correspondence to the Association's secretary Ebenezer Morley.
In a letter dated 13 November, Thring wrote that Uppingham School was "extremely desirous of joining" the association.
In another communication dated the following day, he promised to send the necessary subscription.
These letters made a notable contrast with the generally negative attitude of other public schools (Charterhouse and Harrow had both refused to participate, Shrewsbury would subsequently do so, and Rugby, Eton and Winchester failed to reply at all).

Thring offered several suggestions as to the rules the FA ought to adopt.
He advocated for the use of a crossbar, and objected to the draft rules' allowance of hacking and carrying the ball.
The FA would go on to remove hacking and carrying from its draft rules, under the influence of the Cambridge Rules of 1863.
Thring's suggested crossbar was not, however, included in the FA's 1863 laws, which allowed a goal to be scored at any height; a tape (corresponding to the crossbar) would not be introduced until the second edition of the FA's laws, in 1866.
Thring's objection to the use of the term "touch" (for the area that was out of play on either side of the ground) was also ignored.

The offside rule from The Simplest Game was unanimously adopted by the FA at its meeting of 17 November 1863, and appeared in the first draft of the rules created by Morley, but it was replaced in later drafts with a modified version of the equivalent law from the Cambridge rules.

Thring requested permission to include the FA's rules (along with the Cambridge rules of October 1863), in an expanded reissue of The Winter Game.
He would go on to bring out this second edition of his work in December 1863.

In 1867, Thring sent another letter to the FA's general meeting.
He repeated his objection to the use of the term "touch", and also expressed disapproval of the FA offside law, which had been relaxed the previous year.
These objections were once again ignored.
Thring also objected to the "touch down" tie-breaker which had been introduced by the FA in 1866; this was removed from the laws as the result of a proposal by Wanderers FC.
In a letter to the Daily Telegraph of 24 September 1863, Thring urged the formation of a "parliament [that] could sit with sufficient authority to issue a new code of laws" for football.
When the formation of the Football Association was announced shortly afterwards, Thring responded enthusiastically, sending voluminous correspondence to the Association's secretary Ebenezer Morley. In a letter dated 13 November, Thring wrote that Uppingham School was "extremely desirous of joining" the association. In another communication dated the following day, he promised to send the necessary subscription. These letters made a notable contrast with the generally negative attitude of other public schools (Charterhouse and Harrow had both refused to participate, Shrewsbury would subsequently do so, and Rugby, Eton and Winchester failed to reply at all). 
Thring offered several suggestions as to the rules the FA ought to adopt. He advocated for the use of a crossbar, and objected to the draft rules' allowance of hacking and carrying the ball. The FA would go on to remove hacking and carrying from its draft rules, under the influence of the Cambridge Rules of 1863. Thring's suggested crossbar was not, however, included in the FA's 1863 laws, which allowed a goal to be scored at any height; a tape (corresponding to the crossbar) would not be introduced until the second edition of the FA's laws, in 1866. Thring's objection to the use of the term "touch" (for the area that was out of play on either side of the ground) was also ignored.
The offside rule from The Simplest Game was unanimously adopted by the FA at its meeting of 17 November 1863, and appeared in the first draft of the rules created by Morley, but it was replaced in later drafts with a modified version of the equivalent law from the Cambridge rules.
Thring requested permission to include the FA's rules (along with the Cambridge rules of October 1863), in an expanded reissue of The Winter Game. He would go on to bring out this second edition of his work in December 1863.
In 1867, Thring sent another letter to the FA's general meeting. He repeated his objection to the use of the term "touch", and also expressed disapproval of the FA offside law, which had been relaxed the previous year. These objections were once again ignored. Thring also objected to the "touch down" tie-breaker which had been introduced by the FA in 1866; this was removed from the laws as the result of a proposal by Wanderers FC.
John Charles Thring