User Interviews - $10 free bonus after first study, average £40/hr for studies
User Interviews are a paid marketing research company that will pay for doing studies, interviews, tasks and diary logs. They do all of these for Mobile/Desktop and Tablet.
They are high paying and always seem to be worth your time if you get accepted. Be sure to apply for as many as possible! I got accepted into a survey about buying a new phone for $35, that took me around 30 minutes!
They're currently running a referral where you get $10 extra bonus upon completing your first study/task.
Ref link - https://www.userinterviews.com/r/ezgtemwkb
You can be paid in giftcards and PayPal. It will convert the $ automatically into £ for you or depending what currency you choose.
Non ref link - https://www.userinterviews.com/