East Devon MP Simon Jupp has said he would not have the "same decisions" as Dominic Cummings if "placed in the same situation".
In a Facebook post, Conservative Mr Jupp added he would have "considered [his] position" in similar circumstances, despite acknowledging he believed Mr Cummings actions were "motivated" by a desire to "protect his family" .
The statement comes following the prime minister's senior adviser acknowledging he had driven 260 miles from London to his family estate near Durham in March.
One junior minister has resigned this morning over the controversy.
Mr Jupp said he had experienced "a mixture of anger disappointment and frustration in recent days".
He said: "This has been a deeply unhelpful distraction we could do without as a nation dealing with a pandemic."
We are all making significant sacrifices and coping with situations we couldn’t imagine just a few months ago. Many of us, including myself, have lost people in our lives and haven’t been able to see family and friends. It’s been incredibly tough for everyone."
Mr Cummings said he believed he had acted "reasonably" and within the law.