evidence: The chair of an influential committee of MPs has called for a "radical overhaul" of how government ministers declare their outside interests. [...] Whenever an MP becomes a minister or moves department, they must complete a declaration of all interests form including anything that might be thought to give rise to a conflict. [...] In January, Nadhim Zahawi was sacked from his job as a minister because he failed to declare interests that might have been thought to have given rise to a conflict.