Thames Water describes the "reimbursement of nationalization" if the government of labor adopts a policy

Thames Water told investors that they could ask for their money back if a future Labor government renationalized public service.

In a very unusual move, the company introduced the Labor policy in the stock market documents.

The paper says that a "future intervention" by the government could affect the company's ability to meet its obligations.

The workforce argues that acquiring water as public property would end "stolen" prices and excessive dividends.

In a paper sent to the Irish Stock Exchange, Thames Water highlighted Labor's policy of renationalising the water sector in the UK, as well as others such as gas, electricity and the railways.

The company, which provides customers in London and in the Thames Valley, made reference to a speech by Chancellor John McDonnell in the fall.

"Compensation" of obligations

Rob Young, business correspondent, said: "It is unusual for individual companies to be as explicit in public about the potential impact of a political party's policy."

"The Thames Water prospectus states that investors will be able to claim their money quickly if a majority of the company is taken over by the state."

McDonnell told the Labor Party conference in September that the water industry would be the first to be re-nationalized.

According to Labor's plans, the ownership of existing water and sanitation companies would be transferred to the new regional water boards.

Existing shareholders would be compensated with bonds, union sources told the BBC at the time.

Water was one of Margaret Thatcher's last major privatizations, with 10 major regional authorities – of which Thames Water was the largest – sold in 1989.

Conservatives said Labor's nationalization plans would lead to "a collapse in business investment and a sharp drop in the value of the pound."