Just one word of warning, make sure the current rating is not too high for your items or you will blow the internal fuse of the transformer (as well as your money ).
If you're not sure maybe take these items into a local Maplin so they can confirm compatibility.
Your devices should give you a VA figure, 200 or 300 limits for the large Maplin parts above. You don't want to run them too close to this.
If they are less power (VA) then consider the cheaper stepdown transformers but leave about 20% margin in the VA figure.