153 Best extra income Jobs in United Kingdom (July 2025)

Job Title: Mystery Shopper (Flexible, Part-Time) Location: Various locations nationwide (travel may be required) About the Role: Are you naturally observant, detail-oriented, and curious about how businesses really work behind the scenes? We’re looking for reliable Mystery Shoppers to join our growing network of field researchers. This is an ideal opportunity if you’re between jobs, looking to earn extra income, or want a flexible side hustle that fits around your schedule. You’ll visit retail outlets, service providers, and customer-facing businesses to evaluate real customer experiences and provide honest, constructive feedback that helps companies improve their service quality. Key Responsibilities: · Conduct in-person visits to assigned locations following specific scenarios and guidelines. · Interact with staff and experience the customer journey from start to finish. · Evaluate and report on service quality, staff knowledge, and product information. · Submit detailed, accurate reports within set deadlines. About You: · Excellent attention to detail and observation skills. · Reliable, professional, and discreet. · Strong written communication skills to provide clear, objective feedback. · Flexible availability; assignments may include evenings or weekends. · Access to a smartphone or computer to submit reports. What We Offer: · Competitive per-assignment pay. · Flexible, freelance-style work — choose assignments that fits your lifestyle. · A simple way to earn extra money alongside other commitments. · Opportunity to gain insight into customer experience and brand standards. · Be part of a trusted team improving service quality across industries. How to Apply: If you’re ready to step behind the scenes, earn on your own terms, and help businesses raise the bar, we’d love to hear from you. Apply now with your CV and a brief note on why you’d make a great Mystery Shopper.

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Al-Rathai Thai Cuisine

Job Description: We are currently seeking reliable, energetic, and customer-friendly individuals to join our team as Temporary Weekend Staff. This is a great opportunity for students, part-timers, or anyone looking to earn extra income over the weekends. Responsibilities: - Assist with day-to-day operations during weekend hours - Provide excellent customer service and support - Help with setup, cleanup, or stocking duties - Follow company procedures and safety guidelines - Work as part of a team to ensure smooth weekend operations Requirements: - Must be available to work Saturdays and Friday - Friendly, punctual, and dependable - Ability to work in a fast-paced environment - Strong communication and teamwork skills Benefits: - Competitive hourly pay - Flexible weekend schedule - Fun and fast-paced work environment - Opportunity to gain experience and earn references

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Estella Elite Limited

We’re looking for friendly, outgoing individuals to represent our brand at events, online, and in your local community. As a Brand Ambassador, you’ll help raise awareness, engage with potential customers, and promote our products through conversations, social media, and occasional in-person appearances. This is a flexible opportunity ideal for students, creatives, or anyone looking to earn extra income while building marketing experience

We’re looking for Community Promotion Assistants to help grow awareness and engagement for local events, services, and initiatives! If you enjoy interacting with people, promoting activities, and supporting community outreach — this is the perfect flexible opportunity for you. Work on your own schedule (mornings, evenings, weekends) — ideal for students, working parents, or those seeking extra income. Responsibilities: Promote community programs, local events, and services online and in-person Share and post promotional materials on social media platforms and in community spaces Engage with community members and encourage participation Requirements: Basic English (spoken and written) Internet access + smartphone or computer Positive, outgoing personality Enjoy working with people and promoting good causes No prior experience needed — we provide full training! Flexible availability Must be 23 years older

Elephant and Castle, London

We offer ADHD-friendly tools, lifestyle planners, business resources, and digital glow-up products for people who want to get organized, stay motivated, and show up online with confidence — without burnout. What You’ll Do: As a TikTok Live Seller, you’ll represent The Life Glow-Up by going live on TikTok, showcasing our products, and sharing how they help real people (including you, if you relate!). You’ll be provided with scripts, talking points, and visuals — or you can make the pitch your own. This is a flexible, commission-only role — perfect for confident, engaging creators or sellers who love speaking directly to an audience. What You’ll Be Promoting: Digital ADHD tools Content creator guides Business & lifestyle glow-up kits Self-assessment packs, planners, and more You’ll Get: A 30% commission on every product sold through your affiliate link Your own unique tracking link Optional scripts and live prompts to use or adapt A chance to grow your audience while earning This Role Is Perfect If You: Are confident on TikTok Live Love engaging with viewers and answering questions Have experience with or interest in ADHD, productivity, small business, or glow-up content Want a flexible way to earn extra income

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