Tesco have several gas powered garden torches on their 50% off promo. Black / Stainless torches are £12.50 each, whilst the completely Stainless Steel version is £15.00.
Both types of torch can either be used on matching 6 foot posts (supplied) or as free-standing units suitable for table use.
Create atmosphere in your garden with this gas powered black garden torch. With an intelligent 2 in 1 design for ground and tabletop use, this torch provides a versatile way to light your garden. The black garden torch has a 1.4kw output and requires minimal assembly. This garden torch doesn't include gas container. Gas canister required: Butane Battery Gas Cartridge A4 (Code: BS 0130). These can be ordered from Calor Gas at http://www.calor.co.uk/faq/index.htm
Stainless Steel version is here: http://direct.tesco.com/q/R.202-8619.aspx