I have two MP40W pumps and the power supply for each has the following information on the data plate.
100 to 240 VAC, 50/60hz. The older one has an amperage rating of 1.8 and my newer one slightly lower at 1.2 amps. Output is 24 Volts DC, so you can conceivably run them on battery power with the proper set up. EcoTech/IceCap provide a battery backup system for the pumps as well. The battery backup connects to a separate 12 Volt DC connector and will kick in automatically when main power is lost to run the pump at half speed. The only additional item you may need is a plug adapter to have the power cord fit your socket in the UK.
Pretty sure the MP10 and MP20 will have similar voltage specs for their power supplies.