diff --git a/src/Memory/Memory.hpp b/src/Memory/Memory.hpp
index 1c3c100..b3d6f0b 100644
--- a/src/Memory/Memory.hpp
+++ b/src/Memory/Memory.hpp
@@ -4,6 +4,7 @@
 #include "__BorrowedPtr.hpp"
 #include "__OptionalBorrowedPtr.hpp"
 #include "__OptionalUniquePtr.hpp"
+#include "__OptionalUniquePtrList.hpp"
 #include "__UniquePtr.hpp"
 #include "__UniquePtrList.hpp"
 
diff --git a/src/Memory/__OptionalUniquePtrList.hpp b/src/Memory/__OptionalUniquePtrList.hpp
new file mode 100644
index 0000000..01f196e
--- /dev/null
+++ b/src/Memory/__OptionalUniquePtrList.hpp
@@ -0,0 +1,147 @@
+#ifndef ARBUTILS___OPTIONALUNIQUEPTRLIST_HPP
+#define ARBUTILS___OPTIONALUNIQUEPTRLIST_HPP
+
+#include "__OptionalBorrowedPtr.hpp"
+
+namespace ArbUt {
+    /// @brief Collection of pointers that is owned by the list. When the list exits scope, the destructor on all
+    /// pointers will be called.
+    template <class ValueT> class UniquePtrList {
+    private:
+        std::vector<ValueT*> _vector;
+        using iterator = typename std::vector<ValueT*>::iterator;
+        using const_iterator = typename std::vector<ValueT*>::const_iterator;
+
+    public:
+        inline UniquePtrList() noexcept : _vector() {}
+        /// @brief Initialises a UniquePtrList from a std::vector of raw pointers.
+        /// @param vec A std::vector of raw pointers.
+        inline UniquePtrList(const std::vector<ValueT*>& vec) noexcept : _vector(vec) {}
+        /// @brief Initialises a UniquePtrList with a certain capacity reserved for use. This does not set immediate
+        /// size.
+        /// @param capacity The desired capacity.
+        explicit inline UniquePtrList(size_t capacity) : _vector() { _vector.reserve(capacity); }
+        /// @brief Initialises a UniquePtrList from a initialiser_list.
+        /// @param l A initialiser_list
+        inline UniquePtrList(const std::initializer_list<ValueT*>& l) noexcept : _vector(l) {}
+        /// @brief Initialises a UniquePtrList from a raw pointer range.
+        /// @param begin The raw pointer to the start of the list.
+        /// @param end The raw pointer to the end of the list.
+        inline UniquePtrList(ValueT* const* begin, ValueT* const* end) noexcept : _vector(begin, end) {}
+
+        UniquePtrList(const UniquePtrList<ValueT>&) = delete;
+        UniquePtrList<ValueT>& operator=(const UniquePtrList<ValueT>&) = delete;
+        ~UniquePtrList() noexcept { Clear(); }
+
+        /// @brief Clears the UniquePtrList, and run the destructor on all containing pointers.
+        inline void Clear() noexcept {
+            for (auto& i : _vector) {
+                delete i;
+            }
+        }
+
+        /// @brief Borrow a pointer at a certain index.
+        /// @param index The index to retrieve.
+        /// @return A borrowed pointer reference to the containing raw pointer.
+        inline OptionalBorrowedPtr<ValueT> At(size_t index) const {
+#ifndef NO_ASSERT
+            if (index >= _vector.size()) {
+                std::stringstream ss;
+                ss << "Index " << index << " is out of bounds.";
+                throw ArbUt::Exception(ss.str());
+            }
+#endif
+            return _vector[index];
+        }
+        /// @brief Returns a raw pointer at an index, and releases ownership. Proper handling of the memory is assumed
+        /// to be done by the taker.
+        /// @param index The index to get the pointer from.
+        /// @return A raw pointer.
+        ValueT* TakeOwnership(size_t index) {
+            auto p = _vector[index];
+            _vector[index] = nullptr;
+            return p;
+        }
+        /// @brief Swaps two pointers at indices with each other.
+        /// @param indexA The first index to swap from.
+        /// @param indexB The second index to swap from
+        void Swap(size_t indexA, size_t indexB) {
+            auto temp = _vector[indexA];
+            _vector[indexA] = _vector[indexB];
+            _vector[indexB] = temp;
+        }
+        /// @brief Sets a pointer to a certain index. If an item already existed at that index, it's destructor will be
+        /// called.
+        /// @param index The index to set the pointer to.
+        /// @param ptr The pointer to store.
+        void Set(size_t index, ValueT* ptr) {
+            delete _vector[index];
+            _vector[index] = ptr;
+        }
+
+        /// @brief Removes a pointer at a certain index. It's destructor will be called.
+        /// @param index The index to remove.
+        inline void Remove(size_t index) {
+#ifndef NO_ASSERT
+            if (index >= _vector.size()) {
+                std::stringstream ss;
+                ss << "Index " << index << " is out of bounds.";
+                throw ArbUt::Exception(ss.str());
+            }
+#endif
+            delete _vector[index];
+            _vector.erase(_vector.begin() + index);
+        }
+
+        /// @brief Check whether a pointer is contained in the list.
+        /// @param value The value to check for.
+        /// @return True if the list contains the pointer, false otherwise.
+        inline bool Contains(const BorrowedPtr<ValueT>& value) const noexcept {
+            return std::find(_vector.begin(), _vector.end(), value) != _vector.end();
+        }
+
+        /// @brief Find the index of the first occurrence of a value in the list, return -1 if none is found.
+        /// @param value The value we want the index for.
+        /// @return The index of the first occurrence of the value in the list, or -1 if none is found.
+        inline size_t IndexOf(const BorrowedPtr<ValueT>& value) const noexcept {
+            const auto& it = std::find(_vector.begin(), _vector.end(), value);
+            if (it == _vector.end())
+                return -1;
+            return std::distance(_vector.begin(), it);
+        }
+
+        /// @brief Append a pointer to the list.
+        /// @param value The pointer to push to the list.
+        inline void Append(ValueT* value) { _vector.push_back(value); }
+        /// @brief Borrow a pointer at a certain index.
+        /// @param index The index to retrieve.
+        /// @return A borrowed pointer reference to the containing raw pointer.
+        inline OptionalBorrowedPtr<ValueT> operator[](size_t index) const { return At(index); }
+
+        /// @brief Returns the number of pointers contained.
+        /// @return The number of pointers contained.
+        [[nodiscard]] inline size_t Count() const noexcept { return _vector.size(); }
+
+        /// @brief returns an iterator to the beginning of the specified bucket
+        iterator begin() noexcept { return _vector.begin(); }
+        /// @brief returns an iterator to the beginning of the specified bucket
+        iterator end() noexcept { return _vector.end(); }
+        /// @brief returns an iterator to the end of the specified bucket
+        const_iterator begin() const noexcept { return _vector.begin(); }
+        /// @brief returns an iterator to the end of the specified bucket
+        const_iterator end() const noexcept { return _vector.end(); }
+
+        /// @brief Return a raw pointer to the beginning of the list.
+        /// @return A raw array pointer to the beginning of the list.
+        ValueT* const* RawData() const noexcept { return _vector.data(); }
+
+        /// @brief Returns a std::vector representation of the current list.
+        /// @return A std::vector representation of the current list.
+        const std::vector<ValueT*>& GetStdList() const noexcept { return _vector; }
+        /// @brief Returns a std::vector representation of the current list.
+        /// @return A std::vector representation of the current list.
+        std::vector<ValueT*>& GetStdList() noexcept { return _vector; }
+    };
+}
+
+#endif // ARBUTILS___OPTIONALUNIQUEPTRLIST_HPP
diff --git a/src/Memory/__UniquePtrList.hpp b/src/Memory/__UniquePtrList.hpp
index 19056da..19a46fb 100644
--- a/src/Memory/__UniquePtrList.hpp
+++ b/src/Memory/__UniquePtrList.hpp
@@ -2,6 +2,7 @@
 #define ARBUTILS___UNIQUEPTRLIST_HPP
 
 #include "__BorrowedPtr.hpp"
+#include "../Assert.hpp"
 
 namespace ArbUt {
     /// @brief Collection of pointers that is owned by the list. When the list exits scope, the destructor on all
@@ -16,18 +17,24 @@ namespace ArbUt {
         inline UniquePtrList() noexcept : _vector() {}
         /// @brief Initialises a UniquePtrList from a std::vector of raw pointers.
         /// @param vec A std::vector of raw pointers.
-        inline UniquePtrList(const std::vector<ValueT*>& vec) noexcept : _vector(vec) {}
+        inline UniquePtrList(const std::vector<ValueT*>& vec) noexcept : _vector(vec) {
+            AssertAllNotNull(vec);
+        }
         /// @brief Initialises a UniquePtrList with a certain capacity reserved for use. This does not set immediate
         /// size.
         /// @param capacity The desired capacity.
         explicit inline UniquePtrList(size_t capacity) : _vector() { _vector.reserve(capacity); }
         /// @brief Initialises a UniquePtrList from a initialiser_list.
         /// @param l A initialiser_list
-        inline UniquePtrList(const std::initializer_list<ValueT*>& l) noexcept : _vector(l) {}
+        inline UniquePtrList(const std::initializer_list<ValueT*>& l) noexcept : _vector(l) {
+            AssertAllNotNull(_vector);
+        }
         /// @brief Initialises a UniquePtrList from a raw pointer range.
         /// @param begin The raw pointer to the start of the list.
         /// @param end The raw pointer to the end of the list.
-        inline UniquePtrList(ValueT* const* begin, ValueT* const* end) noexcept : _vector(begin, end) {}
+        inline UniquePtrList(ValueT* const* begin, ValueT* const* end) noexcept : _vector(begin, end) {
+            AssertAllNotNull(_vector);
+        }
 
         UniquePtrList(const UniquePtrList<ValueT>&) = delete;
         UniquePtrList<ValueT>& operator=(const UniquePtrList<ValueT>&) = delete;
@@ -75,6 +82,7 @@ namespace ArbUt {
         /// @param index The index to set the pointer to.
         /// @param ptr The pointer to store.
         void Set(size_t index, ValueT* ptr) {
+            AssertNotNull(ptr);
             delete _vector[index];
             _vector[index] = ptr;
         }
@@ -112,7 +120,10 @@ namespace ArbUt {
 
         /// @brief Append a pointer to the list.
         /// @param value The pointer to push to the list.
-        inline void Append(ValueT* value) { _vector.push_back(value); }
+        inline void Append(ValueT* value) {
+            AssertNotNull(value);
+            _vector.push_back(value);
+        }
         /// @brief Borrow a pointer at a certain index.
         /// @param index The index to retrieve.
         /// @return A borrowed pointer reference to the containing raw pointer.