The word "god" as such is not a name. It's a bit different for "Allah" because while today it is no different from the word "God" or "Lord" anymore, it used to be a personal name when this god was still one among many and had two female divine consorts, one of whom, by the way, was originally worshipped in the Kaaba. The three monotheistic religions all share the same roots and have added elements from pagan traditions to their respective views.
The name of the Biblical god is variously given as YHVH, from which is rendered Jehovah or Jahwe, which is also referred to as Tetragrammaton (i.e. the four letters, and I much enjoy the fact that god is a four-letter word), and as El or Elohim, which in the first case is very much a title like "Lord". Practically every city in the Fertile Crescent area used to have an individual city god prior to the monotheistic conversion, and that god was usually referred to as El or Baal. Yes, the Biblical name used in lots of places throughout the bible texts and Baal are just different renditions of the same title. This jealous god is jealous because of competition on equal terms. And Elohim happens to be a plural form of the same title, used for example in Genesis, so it's not even god but the gods who create heaven and earth. But of course a plural is not a plural in the eyes of the pious, because it can't be allowed.
A little historical research into religion goes a long way, really. It's a very interesting topic for rational discussion.
For that reason I do not dislike that campaign as shown in Hanna's photo, which by the way was not confined to Great Britain. After all, why should there be a religious monopoly on proselytism? We need a new enlightenment if you ask me.
I recommend the following thought:
"I contend that we are all atheists. I just believe in one fewer god than you. When you understand why you dismiss all the other possible gods, you will understand why I dismiss yours." - Stephen L. Roberts