There are three main types – residuary, pecuniary and specific. A residuary gift is a share of your estate once your loved ones are taken care of. A pecuniary gift is a specific amount of money. A specific gift is an item, such as jewellery or even a property.
If you have already made a Will and you wish to give a gift to Concern, you'll need to prepare a new Will, or ask your solicitor to add a codicil (addition) in a similar way to the original Will. A codicil needs to be witnessed and signed in the same way as the original Will and should be kept in the same place as the original Will.