Electrical items along with battery powered items are being removed from passenger hand luggage at UK airports as fears grow of a possible terror attack according to several reports.

Security is being stepped up after a warning from US intelligence agencies of a "specific threat" tonight.

The United States Embassy in Uganda issued an urgent email warning citizens of a possible attack between 9pm and 11pm on Thursday.  Citizens who are planning to travel should consider changing their arrangements.

Laptops, iPads, phones, electric toothbrushes and cameras are being taken out of hand luggage for closer inspection before being allowed on to flights, the channel reports. 

Travellers across the UK are being warned of extensive queues in particular Manchester airport on Thursday morning, so it is being advised to leave extra time to check in.

Passenger Andy Buckley, who was flying to Barcelona from Manchester with his son, said “I’ve never seen queues as long as this at Manchester.”

Prime Minister David Cameron's official spokesman said: "There are terror organisations around the world that seek to do the UK, its citizens, citizens of many other countries including our Western allies, harm.

"We need to always be vigilant to situations that can develop."

In a statement, Mr Johnson said he had directed the US Transportation Security Administration (TSA) to "implement enhanced security measures in the coming days at certain overseas airports with direct flights to the United States".

He said the move was based on the current assessment of "the global threat environment".

"We will work to ensure these necessary steps pose as few disruptions to travellers as possible," he added.

"We are sharing recent and relevant information with our foreign allies and are consulting the aviation industry.

For more information on devices and advice visit: http://www.bbc.co.uk/news/uk-28226552