There are over 2,400 species of Moth in the UK, 90 or so of which are the larger ‘macro’ moths, many of which are not too tricky to identify. Some of them will come to lighted windows, so it’s worth a look.
Like so many other things, Moths are in trouble, so we need more records:
A good ID book is the Field Guide or Concise Guide to the Moths of Great Britain and Ireland, from British Wildlife Publishing. The Concise version will give you most of what you are likely to see. There is a hefty separate volume on the more numerous Micro Moths.
Useful websites are:
The English names of many Moths are interesting in themselves, with some conveying a certain romance, such as True Lover’s Knot, Nonconformist (and Conformist), Burnished Brass, Clouded August Thorn, Dusky-lemon Sallow, Feathered Gothic and Poplar Lutestring.