Separation
Both parties just agree on what they are going to do and separate without making any formal arrangements.
This might suit some people where, for instance, there is no pressure to get divorced and where neither party have plans to remarry. Pensions and joint assets will devolve as if the parties were still living together unless alternative arrangements are made. The drawback is that circumstances can change. Both parties will have developed new lives with new assets and liabilities.
A court will deal with it on the basis of the assets which exist at the time when it comes before the court. It is very difficult for a Judge to look at the position several years on. The outcome can be extremely variable and definitely uncertain.

