We are increasingly seeing more issues arising and there are many more high profile cases such as those over Sir Michael Butler's porcelain collection http://www.bbc.co.uk/news/uk-england-dorset-37451020 or Sir George Martin's estate. http://www.telegraph.co.uk/music/news/the-fifth-beatle-an-unpublished-will-and-a-family-being-torn-apa/
Is there any way to prevent a dispute between family members after the death of a loved one? Taking sound advice when making your Will is essential, making sure that the reasons for the drafting of your Will in the way you have done are clear and where possible being open with family members can all help. You cannot ultimately control the actions of others but good preparation is key.