I tried TransferWise as a money-saving alternative to banks and FX brokers. Since the currency exchange rates offered are around the mid-market rate I've made significant savings. The currency swaps are completed within an hour or two of you placing your order in my experience (three GBP to SEK swaps so far). However you have the option to set a limit on the conversion rate in case the currency you are buying drops by more than you'd like in the meantime. I thoroughly recommend TransferWise.
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