New post-Brexit immigration laws will be the death of the British curry house - with untrained chefs serving spicy beans on toast in a decade, industry leaders have said.

Experts say a lack of proper cooks from abroad will see restaurants serving up jacket potatoes with korma sauce - and coronation chicken spread on naan bread.

They say because new rules will mean many chefs will not be able to move to the UK from Asia - British curry houses will no longer serve proper hot curries.

Industry leaders say that stricter rules could mean technically challenging favourites are replaced by bland, anglicised offerings with added curry powder.

Dishes like paturi and chicken momo may disappear within the decade - with jacket potatoes, korma sauce and coronation chicken spread on naan bread filling the void.

There are fears that as many as two-thirds of the UK's curry houses could close or lose their cultural identity after new laws were unveiled by the Home Office.

The tough terms say skilled overseas workers - which include trained curry chefs - must be able to speak English and earn minimum annual salary of £25,600.

One restaurant owner believes diners should expect 'Brindish' dishes more regularly in the future. Photo: SWNS

Curry experts have said that as many Indian restaurants have two or more specialist chefs this is unrealistic due small profits.

This means the workforce could be made up of people with no Indian or Bangladeshi heritage - which is unlikely to impress paying diners who expect authenticity.

Asad Khan owns celebrity favourite India Dining in Warlingham, Surrey and is the CEO of restaurant support service Offie, which works with 500 eateries across the nation.

He believes diners should expect 'Brindish' dishes more regularly in the future - essentially English café staples with a kick.

He said: "The government’s new immigration rules will make it almost impossible for curry houses to bring trained foreign chefs to the UK.

"Without those chefs and vital support staff, restaurants will have no choice but to turn to British cooks, waiters and kitchen helpers who have little or no experience of south Asian cuisine – or of south Asia itself.

"Over time, this will in our view have a devastating effect on the industry as a whole and will heavily influence the type of dishes that restaurants have to offer.

"A traditional curry has become as synonymous with British culture as fish and chips, and we want it to stay that way for generations to come.

British curry restaurants could lose talented chefs. Photo: Flickr

"This can only be achieved if the government recognises the long-term damage and implications that these new immigration rules will have on the UK’s most beloved adopted dish."

The grim forecast follows ongoing warnings of a national curry crisis fuelled in part by the retirement of the original wave of immigrants who set up curry houses in the 70s.

With second-generation migrants increasingly unwilling to enter the family trade, restaurants have been reliant on sourcing skilled labour from back home.

Until now, an increasing number of EU nationals - many of south Asian origin - were happy to fill waiting and front-of-house roles.

But under the new system introduced on Tuesday (February 18), low-skilled migrant workers in the restaurant sector will not receive a visa.

Ash Balakrishnan is the founder of Nation, Europe’s largest networking group which supports more than 2,000 south Asians in the restaurant sector.

He added: "This is an impossible situation for most restaurants which are already struggling financially.

"They cannot afford to employ skilled overseas curry chefs, they cannot employ second-generation Anglo-Indian and Anglo-Bangladeshis because they don’t want to follow their parents into the restaurant sector, and they can no longer employ EU migrant workers to fill those roles because their skill levels are said to be too low."

The curry industry is estimated to be worth around £4 billion in the UK and employs more than 100,000 nationwide.