
Single person tents come in both single and double skin varieties and can vary hugely in weight. For UK conditions it's advisable to have a porch for cooking, some kind of midgeproof doorway and a strong guying system. Having said that many backpackers use single-skin freestanding tents in low level situations.

Similar to Solo tents but a little big bigger. The advantage of sharing a tent is that the weight can be split between two people.

Tents that are normally used as a base camp or can be taken from the back of a car and pitched on a camp site, these tents tend to be fairly large and heavier than backpacking tents and are often a dome or tunnel design.

These single sheets of nylon-type material are becoming increasingly popular amongst ultralight backpackers. While lightweight and simple they don't offer any protection from biting insects but can often be used by guying to trees, bushes or trekking poles. Shapes and sizes depend only on the depth of your imagination.
Very popular amongst alpinists these bags provide complete cover for your sleeping bag. The best bivvy bags are made from some kind of waterproof/breathable fabric, otherwise your sleeping bag will become soaked in condensation. Bivvy bags have the advanatge of being lightweight, and don't require any guys or poles.