Cover all eventualities for gaps in screening cover

As trees shed their leaves, gaps in screening cover become ever-more obvious, says
NOW that the trees are beginning to shed their summer clothing and will remain naked once more over the winter, it can become quite obvious where you have any gaps in the garden. I’m not talking about gaps in colour down low, rather I’m thinking, up high and in particular, in terms of screening, perhaps neighbours or some unsightly view or feature.