This was on offer at below £100 a short while back for the black Friday deals and went back up everywhere to £129 or more before I was able to get hold of one. Tesco now have some for sale by one of their approved partners for only £99.
From their site (note the typo about DC35).
The Dyson DC34 is a lightweight handheld vacuum cleaner that operates without a cord, removing pet hair easily and efficiently. With a wide debris nozzle/brush tool, the DC34 is perfect for keeping surfaces free of large dirt and dust particles.
The DC34 uses Dyson’s Root Cyclone™ technology, so it doesn’t lose suction as you clean. It runs off a 22.2V lithium-ion battery, that doesn’t fade during use and recharges up to 3 times faster than conventional lithium-ion batteries. The 0.35L dust bin on the DC35 can be emptied at the touch of a button for easy, hygienic dirt removal.
Complete with a crevice tool, the DC34 handheld vacuum cleaner can also be used to clean skirting boards, picture rails and furniture crevices.
The Dyson DC34 cordless vacuum cleaner carries a 2-year guarantee for parts and labour.