I recall that Radio Shack in the USA had a schmartboard power/ground strip board that would seem to do what you want (it has 2 rows of 15 holes, and 2 rows of 13 holes, and all of the pins in a row are connected). Since you are in the UK, Radio Shack is not an option, but presumably you can order directly from schmartboard or find a local distributor: http://www.schmartboard.com/index.asp?page=products_th&id=12.