Bit late to this party but in regard to the original question I DO know a family like that - and I know that its factual because they proudly told me so themselves !!
Mum has not worked since 1979 when her first child was born. She has a slight disability which means she limps ( but that does not stop her walking to the pub 4 nights a week and dancing in high heels - I may even have video of that one !)
Dad ( who passed away 5 years ago) gave up work in 1976 because - and I quote- he didn't really like it .
Mum was granted some sort of mobility benefit back in the day which she has continued to claim ( and as she is over 60 now will probably not be challenged on) . Dad became her carer.
Of their 3 boys , one has always had a job, has a family, bought his own home ( much to his parents derision - after all he could have waited for a Council house like them !)
One is mostly unemployed - his last job was in the pound shop where he got sacked for lack of customer communication skills??? The other now has a child and a girlfriend - who also doesn't work and claims all the benefits of a single parent despite now having a working partner who lives with her.
Mum now lives in a 4 bedroomed council house with just the one child , but has said shes done a lot to the property( not sure what) and wouldn't move even when shes living there alone.
The whole family, bar the one son believes the country 'owes' them the benefits they get. They see nothing wrong in it at all. They have all the latest mod cons, gadgets etc, went on 2 trips to Florida in the last 3 years before the Dad died. Even , when he died they moaned that they thought the government should pay all the funeral costs because they are on benefits.
Would I report them ??
In a heartbeat - I have more than enough current information to do so except that one son is now related to me by marriage and it would hurt him ( and our relationship) immensely if I did that , so I bite my tongue.
Why would I do it?
Because I worked all my life as did my husband and my brothers, sisters, parents and children to fuel the system they are milking . Not because they're disabled , ill or can't work, but because they WON'T work. These are the people who need to be targeted but who always seem to fall through the net.
Sorry for the long post but its something I feel strongly about.