I've tried googling but I'm still confused. Is it like paypal? I don't do online banking but dh does. It's for an activity for the dc and the advert said payment via bacs please and then gives an email address. So I'm not sure if it's like paypal and you just need an email address or if they mean for people to email them and ask for the account details and then do it like direct debit but as a one off thing.
Sorry to be completely clueless, I've just never done this before, I normally just pay for stuff with my debit card.