Anti-government protesters held a rally in Chiang Rai, northern, Thailand, on Wednesday evening (November 25).

Growing numbers of anti-establishment protests have taken place in recent months across Thailand, including at schools and universities.

In Bangkok on the same day, demonstrators converged on the Siam Commercial Bank (SCB) building in Bangkok, forcing it to close for the day.

It is being targeted as the Thai King - the subject of calls for reforms - owns a stake of around 20 per cent in the company.

Activists are calling for sweeping reforms including a new constitution, the resignation of the prime minister Prayuth Chan-o-cha and reforms of the monarchy.

Thai government ministers claim the protests are being funded and encouraged by disaffected opposition and international groups to destabilise the country.