Hi Peteng - Yeah I was originally going for the Switching Type PS, however after reading a bit more into it and advice/info on here I decided to go down the Toroidal PS route.
Rcaffin - I kinda thought the 40V would increase slightly when it goes through the Bridge Rectifier (unless I miss understood this?) I thought the 40v would increase to 56v???
Macec54 - Yeah that PS is what started this thread off, someone else already posted that and I was all set to buy it, then realised they wanted another £100 to deliver to the UK. So now I'm trying to source the parts to make a Toroidal PS myself but finding it difficult to get a Toroidal Transformer here in the UK that matches the specs in your link above!