If you like the look of the classic Arne Jacobsen AJ table lamp, but don't like the £400+ price tag, you might want to have a look at the Costello Table Lamp at Graham & Green.
It looks like a design inspired by the iconic original. It isn't a copy, but the base, angled stem and shade all have the 'look' of the Jacobsen light.
This one has a gloss white shade, which is adjustable, a metal stem and base, all of which stands around 63.5cm tall. The price? Yours for £75.