If all matters can be agreed, the parties need not bother with a disputed court action at all, instead obtaining a cheap and easy simplified divorce. No appearance in court is usually needed - it is basically a form-filling exercise rather than a court battle and is, unsurpisingly, the most desirable way to conclude matters once the finances have been agreed.
Simplified divorces are not available for couples with a child under 16. However, there is a relatively straightforward process for couples with a child under 16 who do not have any outstanding disputes and this is also seen as the most desirable way to conclude matters for them after a separation agreement has been reached.
In practice, many people simply sign separation agreements and wait years before actually bothering to apply for divorce, if at all. However this can backfire so it always best to consider that issue carefully.