Bride-to-be Scarlett Trewavas last night feared she would have to postpone her wedding after her savings were frozen in the collapsed Icelandic bank Icesave. The 24-year-old is one of 300,000 British customers of the Internet savings bank owned by Landsbanki, which was taken over by the Icelandic government on Tuesday and declared insolvent.

Miss Trewavas, who lives with her fiancé Nelson Sa, 24, in Juxon Street, Jericho, explained how she transferred to the Icelandic bank last week to take advantage of the higher interest rate of 6.1 per cent.

But Miss Trewavas now faces an anxious wait to see whether Chancellor Alistair Darling will keep his pledge to ensure all UK savers with Icesave get their money back. She said: "I have an ISA high-interest savings account with two years worth of savings, over £6,400, while Nelson has £1,600 in an instant access savings account.

"We are saving up for our wedding in May 2010, and we need £10,000."

We are very concerned because this is our entire savings and, if we don't get the money back, we will just have to start saving again."

But, even if the money is returned, Miss Trewavas is not sure where to put it to ensure it will be safe. She added: "I opened my account last Monday, but by the weekend there were rumours that Iceland's economy was in trouble.

"I resisted the temptation to withdraw the money because that's what creates a run on the bank.

"By Tuesday, the accounts were frozen — we could see our accounts but could not do anything with them. I have been reassured slightly by Alistair Darling's statement that he will help Icesave customers. But until I have access to my money again, I won't feel happy.

"If we do get our money back, we won't know which bank to trust — which makes me quite tempted to stuff it all under the mattress instead."

Miss Trewavas, who works for an education publishing firm in Milton Park, said she and her fiancé were planning a register office wedding with a reception in a small country house or hotel.

"We came up with a budget of £10,000 for the wedding, which I don't think is a massive amount these days," she added.

"And we wanted to wait until we had saved the money before we started booking the venues. We've got lots of friends and relatives so I don't think we will be able to scale the wedding down — if we lose our money it will have to go ahead at a later date.

"Some savers have hundreds of thousands with Icesave and we could lose a much smaller amount, but that makes us concerned about getting lost under the radar."