Here are the best side hustle ideas in 2025 that I use. But first, a little introduction 💸 Want to make extra money in 2025? Whether it’s £10 here, £50 there, or even a few hundred per month, building small side hustles can really add up. Over the past few years, I’ve earned thousands of pounds through surveys, focus groups, mystery shopping, cashback apps, and referral programmes — all in my spare time. I’ve tried loads of different jobs — nursery nurse, dental nurse, café worker, teaching assistant, retail assistant, admin at a prison, and self-employed crafting. Some weren’t sustainable for my health, but side hustles have allowed me to earn money flexibly. Here’s my ultimate guide to the best side hustles in 2025, complete with tips, links, and estimated earnings. 💻 Paid Focus Groups: Share Your Opinions for Cash Focus groups are a great way to get paid for your opinions. Many can be done from home via Zoom, so you don’t even need to travel. 💰 Estimated earnings: £30–£125 per session, depending on the group. 🛒 Mystery Shopping: Earn While You Shop Mystery shopping apps are perfect for earning small amounts of cash during regular shopping trips. 💰 Estimated earnings: £5–£50/week depending on tasks and visits. 💳 Referral Programmes: Make Money by Sharing Some programmes reward you for referring friends and family. My top pick in the UK is American Express (Amex): 💰 Estimated earnings: Varies, but some users make hundreds of pounds per year from referrals alone. I have a full blog post dedicated to the Amex Reward Card, which I love. You can read it here. 📱 Paid Survey Apps: Easy Money Online Paid survey apps are one of the easiest ways to earn money from your phone in 2025. Here are my favourites that are verified for UK users: ✅ Extra Tips for Side Hustlers in 2025 ✨ Side hustles aren’t about getting rich overnight — they’re about building a steady, flexible income. A little effort each day adds up, and you’ll be surprised at how much you can earn just from your spare time and smartphone!