Find your form. To search, type in a keyword and/or choose a category. To search for archived forms from a previous tax year, choose a year in the drop down menu.
So don't worry so much about how to use  had had  as a unit of grammar, they will come together naturally when you want to express the verb ' to have ' in the past perfect. Let's consider a different verb for a moment like  to want .
have. Have and take are both commonly used with nouns as their objects to indicate that someone performs an action or takes part in an activity. With some nouns, you can use either have or take with the same meaning. For example, you can say ' Have a look at this' or ' Take a look at this'.Similarly, you can say 'We have our holidays in August' or 'We take our holidays in August'. There is often a difference between British and American usage.arry and take are usually used to say that someone moves a person or thing from one place to another. When you use carry, you are showing that the person or thing is quite heavy. He picked up his suitcase and carried it into the bedroom. My father carried us on his shoulders. She gave me some books to take home.