DLA is a fake with a family in my village, what do I do?

There is a family in my small village who claim every benefit going, however they manage to keep their gardens trim and get stuck into diy projects unless the weather is good and they can spend the day in their hammock/ playing with their children. One even goes out for the day with his metal detector, spade, rucksack and packed lunch. Walks or cycles with all his gear but is registered disabled, am I stupid for working to pay for their family to have a "Darling Buds of May" life. Don't get me wrong I enjoy work and the routine but it grates that I work hard and get taxed for the likes of others who seem to free wheel through life. I was under the impression that taxes helped the needy and I am all for that - but this extended family have no moral fibre, no sense of right and have no qualms about free loading. This may sound like jealousy but when I come home from a hard day and I see them laughing and drinking having had a hard day doing their hobbies I feel resentment. Best thing is if they knew I was writing this I would be sucumbed to intimidation, the system is there for those that need it, not those that know how to work it. I work for minimum wage and am proud that I work but the afore mentioned takes the piss. BUT is there anything I can do? I know taxes are inevitable and I am happy to pay for services such as the NHS, Police, Care for those that need it, but not oxygen theives. Sorry, but I'm really fed up!