What is another word for being one lot?
Pronunciation: [bˌiːɪŋ wˈɒn lˈɒt] (IPA) 
There are several synonyms for the phrase "being one lot". One can use the term "joining forces" to convey the idea of individuals coming together to accomplish a task. Similarly, one can use "pooling resources" to indicate that a group of people is combining their resources to achieve a common goal. Another synonym is "banding together", which implies that individuals are coming together as a group to achieve a specific outcome. Alternatively, one can use the phrase "unified front" to signify that a group of individuals is presenting a collective and cohesive approach to a situation. In any case, the idea is that individuals are working together towards a common objective to achieve success.
