But if it causes a delay in submission than it does cause a harmsilasnjita said:I think it helps your case if you have a Police certificate which shows on it that you've not been convicted before.
Look at this situation:You may not have been convicted before and you don't proof that by presenting a certificate, and there are others who have not been convicted too but they present their Police certificate justifying their case. In this scenario, if there are few places, then they'll definitely consider first those with Police certificates(certificate showing they've not been convicted).
So if you have your Police certificate, then send it along. It doesn't cause any harm.