Technology,
Aircraft, cars and other subjects the loosely fall under the heading of technology both modern and historic.

Buildings,
Photos from cities, towns, villages and old buildings such as churches and castles.

Nature
Animals, birds, reptiles, insects and flora, in fact generally any photos that have a nature subject as the main subject of the photo

Photo art or abstract
Images that have been altered with image editing software more than would normally be done to improve photo quality. Unusual photos will also be in here

Scenic
Mountainous, rivers, general and and seascapes can be found in this section. not restricted to the UK, there will be photos from our holidays too.

People,
People that I've noticed when out and about, family shots and photographs that I believe depict the life of the individual.