Just think of all the kit you have around the home relying on small power bricks, I think that even if you dont have a use for this right this minute its a bit of a good buy with £10 off and free delivery.
Its switched mode so none of that unregulated supply variance you get with cheap bricks, has 7 output voltage selections and comes with 8 different power tips to cover most needs.
A nice long connection lead at 1.7mtr and a power on LED
Input voltage is 100-230V AC so even useful when abroad.
Maplin part number is L06BR