Downing Street has said it will "look into" voter ID rules after a serviceman was turned away from a polling station.
The serviceman was unable to use his veterans ID card, introduced at the start of the year, to vote.
Responding on X, veterans' affairs minister Johnny Mercer said: "The legislation on acceptable forms of ID came out before the veterans ID cards started coming out in January this year.
"I will do all I can to change it before the next one."
The prime minister's spokesperson reiterated that this form of ID was introduced "very, very recently".
"I think it's something that we will want to look into," the spokesperson said.
"There's already a very wide range of acceptable documents - including a free voter authority certificate - which is accepted at all polling stations so anyone who is eligible to vote can continue to do so."
However, the spokesperson said Downing Street had no concerns about voter ID more generally, adding: "We don't want to see anyone turned away from polling stations, we want everyone to be able to vote.
"Experience from the last local elections was that 99.75% of people were able to cast their vote successfully."
We have compiled a list of what counts as voter ID below: