While transcribing an-other Colin Blunstone song (I'm still making my way through The Ghost of You and Me), I found a lyrical connection to an earlier Zombies song. In "Feels Like Rain," there are the lines "And it feels like rain when I think of you / No matter where I am or what I do," the second of which is fairly similar to some lines in "I Know She Will": "No matter where you go / No matter what you do / She'll be for you."
The lines describe different things ("It feels like rain" and "She'll be for you"), but the "No matter" sections both have location ("No matter where I am" and "No matter where you go") and action ("[No matter] what I do" and "No matter what you do").
Blunstone wrote "Feels Like Rain," so it's possible that this is an intentional lyrical nod to "I Know She Will."