If the deposit is more than £150, yes.
Curve will automatically assume that charges from hotels or car rental agencies over £150 are deposits. We treat these transactions differently to all others, putting a hold on payment capture, so the Curve effectively acts like a credit card would.
However, Curve cannot distinguish between deposit pre-auths and normal transactions, so for amounts below £150, Curve will always process the transaction, much like if you paid on a debit card.