14 In ordinary circumstances, if there were to be an inquiry of this nature and an order for the defendants to account for part of the revenues or profits received, there might be scope for the account to be conducted on the basis that credit be given to the accounting parties for necessary expenditure which they may have incurred on the land such as for council rates, water rates, land taxes, if any, for electricity or other expenses incurred in servicing the house and cottage let from time to time and other associated expenditure incurred for the purpose of deriving the income obtained from the land and, if any, for expenditure on improvements, at least to the extent that such expenditure enhanced the market value of the land - see Silvester v Sands [2004] WASC 266 [139] - [141]. However, in this case, there was no plea made by either defendant for credit to be given for any expenditure of this kind, nor for any inquiry or account to be conducted on such a footing. I was informed by counsel for the plaintiff, and it was not contested, that several early attempts by the defendants to advance pleas of this kind were rejected or struck out because of lack of particularity, lack of discovery, or absence of any evidence to support the claims. Therefore, regardless of what might have been the position in other circumstances, this case does not involve any need to give attention to whether any credit should be given to the defendants in the account sought. The case has proceeded on the elementary basis that if there is to be an inquiry and an account, it should be in relation to all rents, profits or other revenues derived by the defendants from the land over the period from April 1996 until date, and that there should be an order that one-third of those receipts, profits or other revenues should be paid to the plaintiff.