Will Russia be deported if it has a record of illegal settlement?

Certainly not! First, it is illegal. Once found by immigration, it will definitely be sent back to China. Your passport will have an illegal record, and your visa record will also have an illegal record of the Russian Immigration Bureau. You are usually not allowed to apply for a visa in other countries.

Secondly, as long as they arrive in Britain, they will be detained and repatriated by the Immigration Bureau, and it is impossible to get an entry permit. In the end, the only way is smuggling. But smuggling is also illegal and unpopular.