Neil,
The lights from Maplin finally arrived today - only took a month to get here due to getting lost in the post and then poor customer service.
Having said that they are very good, exactly the same style and quality as the MiracleBeam units but less than 1/3 of the price. They still seem to have some in stock so I might order up another one as a spare - if it takes a month this time I will be less worried.
Cheers, Eddie