Thanks to Matt Newlove i have have uploaded the maplins voice vandal documentation. Its got the parts list, construction guide and they have even kindly given you a PCB layout diagram so you can print it off and etch your own board if you have the facilities.
http://www.mediafire.com/?a9dgz3gzxje
theres some discussion on this here http://www.circuitbenders.co.uk/forum/index.php/topic,151.0.html