It is unacceptable for Parliament's watchdog committee (SCOPA) to continue thwarting calls for the reopening of a probe into the arms deal in the face of strong evidence pointing to corruption, the Democratic Alliance said on Tuesday.

DA spokesman on Public Accounts Eddie Trent said the Standing Committee on Public Accounts (SCOPA) should see to it that submissions made to committee during this week's sessions starting on Wednesday, led to an investigation.

"SCOPA has always maintained that any new information brought forward will be considered on its merits, and we believe that the submissions presented in tomorrow's session will provide a compelling new case for the reopening of investigations into the Arms Deal," he said in a statement.

The DA had already collected evidence from a number of South Africans and the party intends to present it to SCOPA during the submissions.

"Tomorrow I look forward to addressing several critical matters that any reasonable person will view as constituting new evidence and remain completely unresolved at present," Trent said.

New evidence included various allegation of corruption which emerged from a United Kingdom Serious Fraud Office's investigation into bribes paid by BAE Systems.

"Of which more than £75 million is believed to have been transferred to South African beneficiaries through a network of BAE front companies in the British Virgin Islands," Trent said.