Ever wondered which fast-food restaurants take cleanliness as seriously as their menu items? In the UK, the Food Standards Agency rates eateries from 0 to 5 stars based on their hygiene practices.
A record 76.6% of food businesses now boast a 5-star rating as of 2025, but some chains consistently outshine the rest when it comes to squeaky-clean kitchens and food safety.
1. Pret A Manger
The sandwich superstar topped London's cleanliness charts with an impressive 91.2% of its 194 branches earning 5 stars in 2015.
Pret's head of safety explained their philosophy perfectly: "Working with large quantities of fresh ingredients, stringent food hygiene practices aren't just important, they're essential." Their commitment hasn't wavered, maintaining stellar ratings through 2024.
2. McDonald's
Surprised to see the fast-food giant here? Don't be! McDonald's secured 5-star ratings for 86.9% of its London restaurants back in 2015.
An FSA official noted they "scored highly" alongside other top performers. Their secret? Rigorous internal audits, meticulous staff training, and standardized protocols covering everything from hand-washing frequency to temperature monitoring across their 1,300 UK locations.
3. Greggs
Your sausage roll comes with a side of impressive hygiene! This beloved bakery chain saw 83.5% of its London shops achieve 5-star ratings in 2015.
Greggs' advantage? Much of their food is baked off-site, reducing on-premises contamination risks. With over 2,000 UK locations, their consistency is remarkable. FSA data from 2025 continues to rank Greggs among the top performers for food safety.
4. Starbucks
Your morning caffeine fix comes from seriously clean kitchens. In 2015, a remarkable 85.1% of London's 188 Starbucks stores earned the coveted 5-star rating.
The coffee giant enforces standardized cleaning routines across all equipment, especially milk stations where bacteria could thrive. Nearly all UK locations now score either 4 ("good") or 5 ("very good") based on 2024 estimates.
5. Costa Coffee
The UK's largest coffee chain (2,600+ shops) doesn't just dominate in size—they excel in cleanliness too! Almost all Costa outlets proudly display 5-star ratings at their entrances.
Wigan Council reported zero food hygiene prosecutions for Costa between 2019-2023. Their relatively simple food preparation processes, combined with rigorous staff training and regular audits, keep their hygiene scores consistently at the top.
6. Nando's
Famous for fiery peri-peri chicken, Nando's takes food safety just as seriously as flavor. Over 81% of their London restaurants achieved 5-star ratings in 2015.
Handling raw chicken requires exceptional hygiene practices. Nando's excels with strictly monitored food handling procedures, including separate prep areas for raw and cooked items. The chain was specifically mentioned among those that "scored highly" in recent FSA assessments.
7. Domino's Pizza
Pizza perfectionists Domino's maintained impressive standards with 80.4% of London stores earning 5 stars in 2015. The single outlier that scored 0 was quickly addressed—showing how seriously they take lapses.
Franchisees follow detailed safety checklists covering everything from dough preparation to topping storage. By 2024, the vast majority of their 1,200+ UK outlets proudly display 5-star ratings.
8. KFC
Handling raw chicken daily across nearly 1,000 UK locations makes KFC's cleanliness achievement even more impressive. While independent fried chicken shops average around 3.9 stars, KFC maintains mostly 5-star ratings.
Wigan Council reported zero hygiene prosecutions for KFC between 2019-2023. Their HACCP procedures (Hazard Analysis and Critical Control Points), rigorous fryer cleaning, and strict pest control measures create consistently excellent inspection results.
9. Burger King
The home of the Whopper has made whopping improvements in hygiene consistency. In 2015, 78.7% of London Burger Kings earned 5 stars, with nearly all others scoring 4.
Like its competitors, BK implements comprehensive safety systems and regular internal audits. Wigan Council reported zero hygiene prosecutions for Burger King between 2019-2023. By 2025, most UK locations maintain the maximum 5-star rating.
10. Subway
Despite past challenges, Subway has significantly improved its hygiene game. By 2017, approximately 75% of its 2,000+ UK locations achieved 5 stars, with 97% scoring at least "satisfactory" (3 stars).
Subway management emphasizes "high standards" and conducts monthly in-store inspections. Their continuous training and sanitation checks have paid off - by 2024, the vast majority of branches boast top-tier ratings of 4 or 5 stars.
