九一八事变后，南京国民政府第一时间诉诸国际联盟，寻求国联介入。英国作为国联主导国之一，其态度可能对中日间局势的走向产生影响。英国工党在九一八事变发生时处于在野地位，它的政策难以有过多实际效用，更多是作为一种批评意见存在。英国工党在九一八事变后采取了与英国政府有异的态度。由于深陷国内经济危机和党内政治危机，英国工党对国际上的九一八事变反应缓慢。不过，工党表态时明确谴责日本为侵略者，并支持国联采取措施制止日本的战争行为。在日本久不从中国东北撤兵并最终拒绝国联调查团之报告后，工党提出应基于《国际联盟盟约》对日本进行经济制裁。同时，工党对于九一八事变的政策也存在限度，例如它始终未触碰军事制裁要求。此外，工党中部分个人在九一八事变后的态度也具有特点，有绝对和平主义者幻想中国若不进行抵抗则日本最终会停下攻击，还有激进的左翼在看到国联无力限制日本后直言国联已奄奄一息。总体而言，工党在九一八事变后的态度较英国政府更加积极，它在支持国际联盟和维护世界和平方面拥有更多追求。尽管对于一些问题存在认识不足，它同情被侵略国家、促进世界和平发展的政策导向至今仍具价值。

After the September 18 Incident, the National Government of Nanjing immediately appealed to the League of Nations and sought the League's intervention. As one of the leading countries of the League of Nations, Britain's attitude may have an impact on the direction of the situation between China and Japan. The British Labour Party was in opposition at the time of the September 18 Incident, and its policies hardly had much practical effect, but existed more as a critical opinion. The British Labour Party adopted a different attitude from the British government after the September 18 incident. Mired in domestic economic crisis and internal political crisis, the British Labour Party was slow to respond to the international events of September 18. However, the Labor Party explicitly condemned Japan as an aggressor and supported the League of Nations to stop Japan's war actions. After Japan refused to withdraw its troops from northeast China and rejected the report of the League of Nations investigation mission, the Labor Party proposed economic sanctions against Japan based on the Covenant of the League of Nations. At the same time, there were limits to Labour's policy on the September 18 Incident, such as the fact that it never touched the call for military sanctions. In addition, the attitude of some individuals in the Labor Party after the September 18 Incident was also characteristic, there were absolute pacifists who imagined that Japan would eventually stop attacking if China did not resist, and radical leftists who saw that the League of Nations was unable to restrain Japan and said that the League was dying. In general, the attitude of the Labour Party after the September 18 Incident was more active than that of the British government, and it had more pursuits in supporting the League of Nations and maintaining world peace. Despite the lack of understanding of some problems, its policy orientation of sympathizing with invaded countries and promoting world peace and development is still valuable today.