"Wishing Well" reached number 7 and "My Brother Jake" number 4 of the UK charts. Does this classify them as hit singles? It depends on your interpretation of the term.
Edit: ignore me, I'm a slow typer on my phone.
Technically speaking you are correct in that they did only have one hit single so could be classified under the umbrella term "one hit wonders" although that would not reflect a true representation of their achievements. Not having a hit single doesn't preclude you from being a very successful...