Parliament is on high security as thousands march through central Wellington for an anti-lockdown and anti-vaccination protest.

Thousands of people have gathered at Parliament grounds, in Wellington, for an anti-lockdown and anti vaccination protest this morning.

Significant disruptions to the bus services in the capital are expected as buses detour away from the CBD to avoid the protest.

Meanwhile in Auckland, a police officer was bitten by a protester at the northern boundary as a group blocked traffic for more than an hour.