# Big Four

> grouping of companies formed as a result of the Railways Act 1921 in the United Kingdom from 1923 to 1947

**Wikidata**: [Q221905](https://www.wikidata.org/wiki/Q221905)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Big_Four_(British_railway_companies))  
**Source**: https://4ort.xyz/entity/big-four-q221905


## References

1. Ellis' British Railway Engineering Encyclopaedia