Jenny, you might want to look at the Tarptent Stratospire 1 which pitches on walking poles. Space for 2 with slight adjustment and capacious for one. Weighs about 1kg, but you can use the outer on its own as a tarp and thus save about 400g. I'm very pleased with mine and like the versatility. I bought it through Backpackinglight in Denmark thereby saving import duties from the USA.

Thanks I'll take a look