An investigation into the cause of a devastating fire which destroyed a self-storage facility in Croydon has been closed, with police concluding there was no criminal cause.

Fire broke out at the 1198 unit Shurgard warehouse off Purley Way on New Year's Eve, reducing the building and countless possessions inside to ash and rubble.

Two men, aged 25 and 26, initially arrested on suspicion of arson have now been released.

Police say the extent of damage to the building made it impossible to establish the cause of the fire.

"The fire at Shurgard caused catastrophic damage, destroying the inside of the building and contents," Detective Chief Inspector Richard McDonagh said.

"The impact of the fire was devastating for those who have lost property and that is why it was so important for police to consider the possibility of an intentional or reckless criminal act.

"Significant efforts have been undertaken to contact all of the occupants of the premises on the day of the fire.

"As a result of these enquiries I am currently satisfied there is no cause to suspect a criminal act. The police investigation is now closed, subject to any further information coming to light.

"I would like to commend the joint working between the emergency services and other key stakeholders to manage a challenging scene and minimise wider disruption."

The blaze has turned the lives of many customers upside down.

Victims used the units to store a range of valuable and personal goods. Some stored their business stock and livelihoods in the building.

Shurgard have been accused misleading customers and hiding behind vague policies following the incident.

Suzanne Tanguy, who lost all her possessions bar two suitcases of clothes in the fire, launched a petition last month calling for the company to address victims directly and accept greater responsibility for their losses, which has been signed over 17,000 times.

"A whole period of my life is gone," she said.

"I feel they've deliberately misled people, encouraging customers to store sentimental items in their marketing but then forbidding it in their terms and conditions."

The company's website suggests storage units could be "very useful" in a "period of mourning", while the terms and conditions of customer contracts state it is "strictly forbidden" to store "irreplaceable objects" or "objects with an emotional value."

Victims argue this is misleading, since the belongings of deceased relatives are more than likely to have special sentimental value.

In response, Shurgard has emphasised the terms and conditions expressly forbid the storage of such items.

Speaking on the Victoria Derbyshire show, Duncan Bell, vice president of operations, said: "In the terms and conditions it does mention that customers are not to store items of emotional or sentimental value.

"There's no value of misleading people to our business. The contract that's signed confirms that the customer has read the terms and conditions."