Loss Relief and Withholding Tax Credit Relief

phoenixd

My client has losses brought forward and foreign tax to claim relief from. If I claim foreign tax relief against corporation tax, there will be nothing to pay but over 5k will be lost as relief can't be carried forward. If I claim it as a deduction/expenses, there'll be about £300 to pay in tax. In both cases, all losses are being fully utilised. My question is, is there another way of making the claim(s) more efficient. Am I missing something?