15 Best Second Jobs to Boost Your Income in the UK for 2025

Need extra cash without quitting your day job? Discover 15 flexible second jobs—remote, part-time, or creative—that fit your life and pay well. From freelancing to pet sitting, we’ve got you covered with salaries, steps to start, and insider tips to succeed in the UK’s 2025 job market.

With the cost of living squeezing wallets and Labour’s National Insurance hikes raising employer costs, one in ten UK workers is eyeing a second job to make ends meet. Whether you’re saving for a holiday, paying off debt, or exploring a passion, a side hustle can be a game-changer. But how do you pick the right one? This guide rounds up 15 top second jobs—some from home, others out and about—that offer flexibility, decent pay, and growth potential. We’ve included average salaries, UK-specific platforms, tax tips, and practical steps to get started, so you can earn extra in 2025 without burning out.

Why Take a Second Job in 2025?

Before diving in, let’s look at why side hustles are booming:

• Financial Boost: Supplement income as costs rise (UK inflation hit 2.3% in Q1 2025).
• Skill Building: Learn skills like coding or design to future-proof your career.
• Flexibility: Remote and part-time roles fit around your 9-to-5.
• Passion Pursuit: Turn hobbies (e.g., photography) into profit.
• Career Transition: Test new industries without quitting your main gig.

But beware: check your primary contract for restrictions, manage time wisely, and declare earnings to HMRC (more on taxes later). Ready? Here are the 15 best second jobs for UK workers in 2025.

Remote Second Jobs for Flexibility:

These roles let you work from your sofa, saving on commute costs and time.

1. Freelance Writer:

• Average Salary: £27,871/year (or £20-£50/hour freelance).
• What You Do: Write blogs, marketing copy, or news articles for clients. Edit colleagues’ work for extra gigs.

How to Start?

• Build a portfolio on Google Docs with 3-5 sample pieces (e.g., a career tips blog).
• Join UK platforms like PeoplePerHour or ProBlogger.
• Pitch small businesses via LinkedIn for £100-£300 per article.

Pros: High demand for SEO content; work evenings/weekends.

Cons: Slow to build clients; tight deadlines.

Tip: Use Grammarly to polish work and pitch UK startups for steady gigs.

2. Graphic Designer:

• Average Salary: £26,621/year (or £30-£60/hour freelance).
• What You Do: Create logos, social media visuals, or website graphics per client briefs.

How to Start?

• Learn basics via free Canva tutorials or Adobe Creative Cloud (£20/month).
• List services on Fiverr or Upwork; start at £15/hour.
• Showcase designs on Instagram to attract UK brands.

Pros: Creative freedom; high hourly rates.

Cons: Needs software investment; client revisions can drag.

Tip: Offer package deals (e.g., logo + business card for £200) to stand out.

3. Data Analyst:

• Average Salary: £33,701/year (or £25-£50/hour freelance).
• What You Do: Analyze sales or customer data, create reports, and suggest strategies.

How to Start?

• Take a £50-£200 Udemy course on Excel or Python.
• Find part-time gigs on Indeed or Freelancer.com.
• Network at UK data meetups (e.g., Data Science London).

Pros: High pay; growing demand in tech and retail.

Cons: Steep learning curve; needs focus.

Tip: Specialize in e-commerce data for UK startups to charge premium rates.

4. Virtual Tutor:

• Average Salary: £26,238/year (or £15-£40/hour).
• What You Do: Teach students (Math’s, English, coding) one-on-one or in groups via Zoom.

How to Start?

• Sign up on Tutorful or MyTutor (£10-£30/hour).
• Create a profile highlighting your expertise (no degree needed for non-academic subjects).
• Offer a free 15-minute trial to hook clients.

Pros: Flexible hours; rewarding work.

Cons: Scheduling clashes; parent communication.

Tip: Teach niche skills (e.g., GCSE prep) for higher rates in the UK.

5. Virtual Assistant:

• Average Salary: £22,104-£30,000/year (or £10-£25/hour).
• What You Do: Manage emails, schedules, or social media for businesses.

How to Start?

• List services on Bark or Virtual Assistant Jobs.
• Learn basic tools like Trello (free) or Hootsuite (£49/month).
• Target UK SMEs needing part-time help (10 hours/week).

Pros: Low entry barrier; remote.

Cons: Repetitive tasks; client demands.

Tip: Bundle services (e.g., email + social media) for £200/month contracts.

6. SEO Specialist:

• Average Salary: £28,000-£35,000/year (or £20-£50/hour freelance).
• What You Do: Optimize websites to rank higher on Google using keywords and analytics.

How to Start?

• Take a free Semrush Academy course or Moz’s SEO guide.
• Offer audits on Upwork (£50-£100 per project).
• Pitch local UK businesses (e.g., cafes) for quick wins.

Pros: High demand; scalable income.

Cons: Constant learning; results take time.

Tip: Focus on local SEO for UK towns to charge £300/month retainers.

Part-Time Gigs for Hands-On Hustlers:

Prefer getting out or using practical skills? These jobs offer variety.

7. Babysitter:

• Average Salary: £10-£15/hour.
• What You Do: Care for kids, help with homework, or drive them to activities.

How to Start?

• Get a DBS check (£18-£40 via Gov.uk).
• Advertise on Childcare.co.uk or local Facebook groups.
• Take a £20 first aid course for credibility.

Pros: Flexible evenings/weekends; fun for kid-lovers.

Cons: Unpredictable hours; high responsibility.

Tip: Offer group babysitting for multiple families to earn £30+/hour.

8. Pet Sitter:

• Average Salary: £10-£20/hour or £25-£50/day.
• What You Do: Feed, walk, or board pets while owners are away.

How to Start?

• Join Rover or Pawshake (£5-£10 signup fees).
• Post flyers in UK pet shops or vet clinics.
• Build reviews with 2-3 free trials for neighbors.

Pros: Low startup cost; animal bonding.

Cons: Messy moments; last-minute bookings.

Tip: Charge extra for overnight stays (£50/night) in pet-heavy cities like London.

9. Delivery Driver:

• Average Salary: £54,198/year full-time (or £12-£20/hour part-time).
• What You Do: Deliver food, parcels, or goods via car or bike.

How to Start?

• Sign up with Deliveroo or Uber Eats (needs UK driving license).
• Ensure bike/car insurance covers deliveries (£20+/month extra).
• Start evenings for peak tips (£5-£10/hour).

Pros: Instant pay; active work.

Cons: Fuel costs; weather woes.

Tip: Focus on busy UK areas (e.g., Manchester) for £100+/week.

10. House Cleaner:

• Average Salary: £33,300/year full-time (or £10-£15/hour part-time).
• What You Do: Clean homes, sanitize surfaces, or do laundry.

How to Start?

• Advertise on Gumtree or Nextdoor for local clients.
• Buy basic supplies (£50 startup).
• Charge £12/hour; offer deep cleans for £100.

Pros: Steady demand; cash-in-hand option.

Cons: Physically tiring; client fussiness.

Tip: Team up with another cleaner to tackle bigger jobs faster.

Creative and Emerging Side Hustles:

Want to stand out or tap 2025 trends? Try these.

11. Voiceover Artist:

• Average Salary: £25-£100/hour (project-based).
• What You Do: Record ads, audiobooks, or e-learning scripts.

How to Start?

• Buy a £50 USB mic (e.g., Blue Yeti).
• Join Voices.com or Mandy Voices (£100-£500/gig).
• Record a demo reel using Audacity (free).

Pros: Lucrative; home-based.

Cons: Competitive; needs vocal confidence.

Tip: Target UK e-learning firms for £200+ projects.

12. Eco-Consultant:

• Average Salary: £30-£60/hour (freelance).
• What You Do: Advise businesses on sustainability (e.g., carbon audits).

How to Start?

• Take a £100 online course from Carbon Trust.
• Pitch SMEs via LinkedIn for £500 audits.
• Join Green Economy UK events for clients.

Pros: Aligns with Labour’s net-zero push; high rates.

Cons: Niche; needs research.

Tip: Focus on small UK retailers to build a £1,000/month side gig.

13. Content Creator:

• Average Salary: £500-£5,000/month (varies by platform).
• What You Do: Post TikTok, YouTube, or Instagram content for sponsorships.

How to Start?

• Pick a niche (e.g., UK career tips).
• Use CapCut (free) for editing; post weekly.
• Pitch brands after 1,000 followers (£50-£200/post).

Pros: Creative; passive income potential.

Cons: Slow growth; algorithm changes.

Tip: Focus on LinkedIn for B2B UK audiences to land £500 deals faster.

14. Online Survey Taker:

• Average Salary: £1-£10/hour.
• What You Do: Complete surveys for cash or vouchers.

How to Start?

• Join Swagbucks, YouGov, or Prolific (free).
• Set aside 1 hour/day for £5-£20.
• Avoid paid survey sites promising “£1,000/week.”

Pros: No skills needed; easy start.

Cons: Low pay; repetitive.

Tip: Combine with other gigs for £50/week pocket money.

15. Transcriptionist:

• Average Salary: £34,270/year full-time (or £8-£20/hour part-time).
• What You Do: Convert audio to text for podcasts or legal firms.

How to Start?

• Practice typing (aim for 60 WPM).
• Join Rev or TranscribeMe (£0.50-£2/audio minute).
• Buy noise-canceling headphones (£30).

Pros: Steady work; home-based.

Cons: Eye strain; tight deadlines.

Tip: Specialize in UK legal transcription for £25/hour rates.

Tips to Succeed with Your Second Job:

To make your side hustle thrive without derailing your main job:

• Check Contracts: Ensure your employer allows moonlighting. Some UK firms ban competing work.
• Manage Time: Use apps like Toggl (free) to track hours; cap at 10-15 hours/week to avoid burnout.
• Avoid Scams: Stick to verified platforms (e.g., Upwork, Rover). Never pay upfront for “job access.”
• Network Smart: Join UK-focused groups (e.g., Freelance UK on LinkedIn) for referrals.
• Upskill Fast: Free YouTube tutorials or £20 Udemy courses can boost earnings in 4-6 weeks.
• Stay Legal: Register as self-employed with HMRC if earning over £1,000/year. Income below £12,570 is tax-free (2025 threshold).

Tax Tip: Earnings from second jobs count toward your total income. Use HMRC’s online calculator to estimate tax. For freelancers, set aside 20% of earnings for tax/National Insurance. Unsure? Book a free HMRC webinar for side hustle advice.

2025 Trends to Watch:

The UK job market is shifting—here’s what to leverage:

• Green Gigs: Labour’s 100 million solar panel goal by 2035 boosts eco-consulting and renewable energy roles. Check out our recent article: How to Find Your Perfect Green Job?
• AI Tools: Use ChatGPT for content ideas or Canva’s AI for quick graphics to save time.
• Gig Economy: Platforms like TaskRabbit (odd jobs) and Airtasker are growing in UK cities.
• Hybrid Skills: Roles blending creativity and tech (e.g., content creation with SEO) pay 30% more.

Real Talk: A Success Story

Meet Sarah, a Manchester admin assistant earning £25,000/year. She started pet sitting on Rover in 2024, working 10 hours/week. By 2025, she’s banking £500/month, covering her car loan and saving for a holiday. “It’s hard work, but I love dogs, and the extra cash feels empowering,” she says. Her tip? “Start small, get reviews, and raise rates once you’re booked solid.”

Which Second Job Fits You?

• Tech-Savvy? Try data analysis or SEO for £30+/hour.
• People Person? Babysitting or tutoring brings £15-£40/hour.
• Creative? Voiceovers or content creation offer £100+/project.
• Low Commitment? Surveys or transcription need just 1-2 hours/day.

Not sure where to start? Download our free Side Hustle Starter Checklist for a step-by-step plan, including UK platforms, tax tips, and time management hacks.

Your Next Step:

A second job isn’t just about cash—it’s about freedom, skills, and confidence. Pick one from this list, spend 2-3 hours setting up a profile, and test it for a month. You could be earning £100-£1,000 extra by summer 2025.

What’s your plan? Tried a side hustle before, or eyeing one above? Share your thoughts below—we’d love to hear! For more career tips, check our guides on The Most In-Demand Jobs in the UK or Career Success.