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EDIT: found a cheaper link.
Hand grinders are excellent value relative to electric ones per £ spent, so for your budget I'd definitely go manual -- you can reconsider when you get RSI :)
In addition to the Rhinoware suggested earlier, the Hario hand grinders are good. I use a Mini at work, it'll do any grind size down to espresso:
See: https://www.redber.co.uk/products/hario-mini-mill-slim-coffee-burr-grinder?utm_medium=cpc&utm_source=googlepla&variant=17588775493&gclid=CjwKCAiAr_TQBRB5EiwAC_QCq0Yr5Ivf8jn7Hl7U1qpFkcdlfwHOLXq1UE0BpPOnAW9B6RYJedN4KRoCHDoQAvD_BwE
Thanks. Budget is £30 tops. Manual is probably preferable, but that electric one looks decent too. I'll be grinding for filter/stovetop, and hopefully aeropress - will this be achievable? Thanks