I am thinking of moving in with my girlfriends family. I will obviously have to register on the Electoral Register as my addres will change. If i chose to move in and register, will it have any sort of impact on my girlfriends family, for example with me being there will they have to pay more council tax? or anything else for that matter? or does me being registered simply mean a can vote?

i will be very gratefull for any information regards to my concern.