Complex sentence: On 1 March 2012 Tony was alleged to have argued with Gemma about an overflowing bath and that she had told him to leave; he then grabbed her by the wrists and punched her to the floor but claimed he had no further recollection of his actions.
Split into simpler sentences: On 1 March 2012, Tony was alleged to have argued with Gemma about an overflowing bath; she had told him to leave. He then grabbed her by the wrists and punched her to the floor but claimed he had no further recollection of his actions.