This product appears to be identical to the Wilkinson's 97p solar light previously reviewed, and though individually much more expensive at 2012-06-24 at £1.49 a shot, at 5 for £5 inflation has been kind...
Less kind is the fact that all the Wilko lights failed within a year, thus creating an e-waste (and emboddied energy) problem; let's hope these are better.
These have the oddity that the little solar panels on top have a variable number of stripes (about 2--5) which indicates a very variable voltage for the electronics to deal with (albeit the gathered solar power will be the same).
Update 2012-07-08: all working fine and alight as of 10pm so misgivings about the solar panel variability seems to have been misplaced.
Update 2012-08-10: one seems to have failed a few days ago, possibly due to water ingress, and moving it / attempting to let it dry out, has not yet fixed it.
Update 2012-10-07: only two are still working: very poor from a WEEE point of view, and I think that these failures within 6 months should get money back.
Update 2013-01-01: all long-since dead: very poor.