Every case is different. The rule is that the Court must make proper provision for all parties and to do that it will take account of ALL assets, whatsoever and wheresoever situate, whether held in sole or joint names or with any body else.
Much depends on the age of the parties, whether there are children , the earning capacity of the parties, the matter of pensions and, indeed, what the parties themselves ( after taking proper legal advice) want to do. Many people are entirely grubby about money and want it all - it does not work like that. The parties need to look at the other person's situation and decide, with their advisors, what amounts to proper provision. Very often, what does happen, is that the parties negotiate a settlement based on what a Court would likely order, if it ever went to that stage. But if people get thick ( and, boy oh boy, can people be thick when it comes to marital break up and money!) it can all get very nasty. And expensive.
It is particularly difficult at the moment and a lot of separating/ divorcing couples are being advised to consider "interim" settlements until , it is hoped, the economy improves. It is far from ideal but it is realistic.
mf