This is a cracking one person tent. Light, easy to pitch, airy to sleep in and first class value.
I have just used this on a weekend with some very heavy rain and strong winds and it performed admirably.
Now in more detail...
The tent is purely a one person tent and shouldn't be considered for two people, even in a survival situation. The tent takes no more than 5 minutes to pitch and there is sufficient space between the flysheet and the inner tent to allow your rucksack to be stored out of the rain.
The construction of the inner is mainly of mesh, rather than the more traditional close woven material. This keeps the tent feeling light and airy inside, despite its small size. Being 6'2" tall, I did wonder about internal storage space. In practice, there is about a foot of space above your head in which to store small items and, assuming that you are using your cloths as a pillow, then this is sufficient.
There are a couple of tips that I think you might appreciate. Firstly, take along a spare, long guy line and one extra peg. If you use this in combination with an up-turned walking pole (see photo), it allows you to have a small sheltered area in which to cook, rather that being exposed to the elements if the side was rolled up in the normal manner.
Secondly, I would advise a small "sit-mat" or small groundsheet to allow you to keep yourself mud-free as you take off your boots and enter the tent (or later emerge).
I would heartily recommend this lightweight (about 1.2 kg) tent if you are looking for cheap tent that is suitable for the British climate.