I am currently holding ETH in my Jaxx account on my android phone.
What's the best way to convert this back into a fiat currency, such as the £?
https://hitbtc.com/exchange/ETH-to-EURhttps://cex.io/eth-eurNever use both for trading, but they have good volume.
If you looking for most credible one, go to kraken, they have eth/eur pair.