Do u complete VAT retrun if you've made no sales?

I registered for VAT but not made any sales yet, therefore not charged customers VAT. I've already tried the HMRC website but i am being blinded with science.
The only place i've used my VAT code is on my business account on ebay and got reduced insertion fees. Do i still need to do a return in view that i've not made anything this quarter?

Thanks in advance!