Pensions/dependancy of parents on children

[barratt]

I am a solicitor in England claiming compensation for two Ukrainian pensioners whose son was killed whilst working as a student in England. The son was a student at University in Ukraine.He intended to work in information technology either in Ukraine or Canada.

The claim for dependancy by his parents depends upon proof of:-
1 Likely earnings
2 The fact that children support their parents in retirement
3 How much ,as a percentage of income,it is customary for a child to pay to his parents.
4 How much income my clients need for a reasonable lifestyle

Can anyone help to provide this information or details of anyone who can provide the information?