Thanks everyone.
I knew about the red cover, it's just when it folds back it doesn't give you much room to attach a clip to.
I have some jump leads but they just kept falling off.
@LordVoltermore from what you said, can I attach the lead for the positive battery terminal to the bolt nearest the red cover? I have attached an image, where the yellow arrow is pointing to roughly where the bolt is.
It might just the cables are heavy duty ones where the clip is too large and the end of the leads.