I sent them my CV with the initial speculative email which includes portfolio links, I also included a portfolio link in my cover letter/message in the first email body. I kind of assumed they would consider that my application! Should I have resent the CV?

No. You didn't tell us this part when you first told the story, so in my reply, I didn't know this. You have applied. Now you have to move on and apply to other companies. If this company decides they want to interview you, they'll let you know.