I would be able to claim legal aid,hes offered me 1,500 for 29 years of marriage, of which i was a stay at home mum to our four children,i walked away almost 2 years ago with my clothes and nothing else..
You can reach another agreement changing the terms of the Separation Agreement by another a minute. It is possible to have a Separation Agreement set aside by the court up to a year after divorce if it is unfair, but as Ruby said the legal expenses involved aren''t insignificant. So a judgement call has to be made as to how much more could be gained at what cost.
If there is significant equity involved or pensions my suggestion would be to seek a legal opinion and if possible try to negotiate a change. It isn''t in either party''s interest to run up legal bills by going to court.