are social workers unbiased. my son lives in liverpool. his ex partner in cheshire?

my sons ex partner had the kids taken off her, big neglect, if you read back 3 years on my q's, you will know what i mean. any way, the maternal granma is fighting for the kids, she never reported any neglect, that i am aware of, which i did. thats how s/s got involved in the first place, though i think that they are totally unaware that it was me. my son has had his two boys since january this year but it is still being fought out. the mother and g/mother have both got individual legal representation in court, whilst my son has one solicitor who i think is not really bothered, the family, has loads of problems (maternal family} she has had 3 daughters all called rape or abuse, a partner who spent 3 years in jail for having sex with her eldest daughter, the list is endless, BUT when i go with my son to court, all i see is the kids nan and mum surrounded by solicitors and the social worker, who i thought was supposed to be working for the benefit of the kids, talking to them, never even asked my son how the kids where. only visited them 3 times @ my sons home. maybe its a boundry