Traders based at Tube stations across the borough are counting the cost of the London terror attacks.

Arnos Grove, Southgate, Oakwood, Bounds Green and Cockfosters Tube stations, served by the stricken Piccadilly line have been closed to city commuters since last Thursday.

Businesses based in the stations have seen a dramatic decline in sales, and have been given no indication of when the line may be fully operational.

Florist Andree Hazelton, owner of Floral Delights, based at Arnos Grove station, said: "Trade is really suffering; sales are down by 95 per cent and without public support I am not going to last another two weeks.

"I have insurance cover, but it doesn't cover terrorism. I can't trade, yet I am willing and my stock is so perishable. I had to throw £125 worth of flowers away on Monday.

"I could understand if my business was suffering if it was my own fault, but this is out of my control and it is hitting me hard."

Newsagent Jeya Vijayaratnam has been based at Arnos Grove Station since 1999.

She said: "I am only doing 30 per cent sales. We are some £4,000 a week down and are losing lots of money on travel card revenue.

"We are closing early, sometimes at lunchtime and I'm not sure how long we can carry on."

Meanwhile Ashok Ruparelia, owner of Humphrey's newsagents based at Southgate Tube station, said: "Basically nobody is using my business and sales are down by 90 per cent.

"I was told it could be some nine weeks before the line is open, but nothing is official.

"We have got to survive, but we can't afford to pay ourselves wages. You have to grin and bare it as there are people in worse situations who are grieving following the blasts."

A London Underground spokesman said it could be some weeks before work begins on the Piccadilly line.

He said: "This is an issue we are aware of and we will be considering the impact on businesses within and outside stations and will be in touch with them in due course. Anyone who is particularly concerned can write in."

He added: "We don't know when we will have possession of the Piccadilly line and we can't open the line any further southbound than Arnos Grove because we can't turn the trains around.

"There are posters going up in all the stations giving advice to passengers and businesses about when the stations will open."

Meanwhile Enfield Council, who the traders pay business rates to, said it could consider offering them financial relief.

A spokeswoman said: "At this stage it is too early to consider any hardship cases since we believe the Piccadilly line will be functioning very soon and those businesses will recover. However, we are watching developments closely."