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AOG if you had to be 'cllean' to be involved in litigation there would never be any criminal cases, would there ?
The answer is probably that under the Children Act 1989 the interests of the child is paramount
It is only in a branch of law called Equity, that one has to be a litigant 'with clean hands'. Read this:
http://en.wikipedia.org/wiki/Clean_hands
and then half way thro' reading it, you can explode "what ARE you talking about again?"
Tinsley v Morgan - two lesbians fraudulently apply for housing benefit and then in ensuing litigation despite their dirty dirty hands are allowed an equitable remedy. [ and WHAT is an equitable remedy when it is at home? I can hear you ask the laptop screen ]
and guess what AOG ? Tinsley v Morgan is back in the news ! here
http://www.newlawjournal.co.uk/nlj/content/dirty-hands-reach-further