GetEpic - not just for your assignments and quizzes! This website is full of texts from all different subjects and ages and lengths. Some of these also read to you!
Read Theory - children use their login to have short reading passages and multiple choice questions at their level. The level of difficulty progresses with the children so challenge yourself to practise and keep moving up! (Just watch out as American English spelling!)
Reading Lists - This is the link for the Year 5 list, however it offers lists for all age groups so the Year 6 list may be worth a look too for great vocabulary and language! If we could just ask (unless you have already!) to refrain from 'Who Let the Gods Out?' for the moment!