Skip to main content
English Cymraeg
Food Hygiene Rating Scheme (FHRS) Audit of Display and Business Survey 2022: Technical report

FHRS Audit Technical report 2022: Audit Fieldwork

This is the second wave of the FHRS display audit research IFF Research have conducted (although annual research into the FHRS has occurred since 2011) . Effort has been made to ensure as much consistency as possible between the 2021 and 2022 waves of the research in order to compare overtime. However, some changes were made at this wave and as such a short pilot fieldwork phase was conducted before the mainstage fieldwork, in order to evaluate the impact of these changes on results. The details of both phases are outlined below.

Last updated: 12 September 2023
Last updated: 12 September 2023

Pilot fieldwork 

Ahead of the pilot audit fieldwork, some refinements were made to the questionnaire used in the previous wave. Specifically, questions about the format of stickers and the date shown on the reverse of stickers were removed and questions about online display were added.(footnote)       

Pilot audit fieldwork was conducted between October 6th and October 13th 2022 to ensure the questionnaire designed for the audit of food businesses was appropriate ahead of mainstage fieldwork. A small proportion of the starting sample was randomly selected for the pilot (114 businesses), from which the below profile of completes were achieved. In total, 43 audits of food businesses were conducted during the pilot. Tables 3.1 to 3.3  present the number of interviews completed by country, sector and FHRS rating. 

Table 3.1 Profile of pilot audits of food businesses by country
Country Completed audits
England 14
Northern Ireland 14
Wales 15
Total 43
Table 3.2 Profile of pilot audits of food businesses by sector
Sector Completed audits

Accommodation & pub/bar/nightclub 

6
Restaurant/café/canteen/other catering  16
Retailers  15
Takeaway/sandwich shop  6
Total 43
Table 3.3 Profile of pilot audits of food businesses by FHRS rating
FHRS Rating Completed audits
0 0
1 2
2 1
3 4
4 8
5 28
Total 43

All auditors (via Mystery Shoppers) received a verbal and written briefing on the survey before the start of pilot fieldwork. The note differed from the 2021 audit instructions in the sense they were clearer and more prescriptive. This briefing provided the auditors with an understanding of the research background, the questionnaire design, the screening criteria, and the sample design.  

The questionnaire performed well during the pilot.  Auditors experienced no issues with any of the survey questions nor any issues with being able to conduct their assignment covertly. There was no need to adapt the audit materials ahead of mainstage fieldwork. The final version of the questionnaire used in mainstage fieldwork can be found in Appendix B of this report. 

Mainstage fieldwork 

Mainstage audit fieldwork took place between October 25th and November 23rd, 2022. In total, 1,525  audits were completed. The final profile of the audits achieved by country, sector and FHRS rating is detailed in Tables 3.4 to 3.6. 

Table 3.4 Profile of mainstage audits of food businesses by country
Country Completed audits
England 501
Northern Ireland 527
Wales 497
Total 1,525
Table 3.5 Profile of mainstage audits of food businesses by sector
Sector Completed audits

Accommodation & pubs, bars and nightclubs 

267
Restaurants, cafes, canteens & catering  608
Retail 417
Takeaways and sandwich shop  233
Total 1,525
Table 3.6 Profile of mainstage audits of food businesses by FHRS rating
FHRS Rating Completed Audits
0 2
1 20
2 26
3 114
4 265
5 1,098
Total 1,525

As with the pilot, before the start of mainstage fieldwork all auditors received a briefing on the survey and were issued with written instructions. This ensured that interviewers understood the background to the research, the questionnaire design, the screening criteria, and the sample design. 

During mainstage fieldwork there were some instances where it was not possible to conduct an audit. The main reasons for this included establishments being closed within their advertised opening hours, establishments no longer being in business and establishments not being publicly accessible (22 closed, 5 stopped trading/closed down, 30 inaccessible). Where it was not possible to complete an audit, auditors were given the details of a new establishment to audit, which met the same criteria in terms of region, outlet type and FHRS rating.  

The majority of businesses and establishments that were not publicly accessible were in England (34, compared to 16 in Wales and 7 in Northern Ireland). In all countries, they were also more likely to be  the Restaurant/Café sector (38, compared to 13 in the Accommodation & pub/bar/nightclub sector, 4 Retail sector and 2 in Takeaway/sandwich shop sector).