Publications

Sainsbury’s 60p Fruit & Vegetable trial

We evaluated the effectiveness of price incentives in encouraging shoppers to purchase more fruit and vegetables at Sainsbury’s.

Read the IGD Industry-facing reports by clicking the links below:

Read the news articles associated with this research using the links below:

Sainsbury’s Healthy Start Top Up Vouchers trial

We evaluated the impact of Sainsbury’s offering a £2 top-up voucher for shoppers using Healthy Start vouchers in the supermarket.

Read the IGD Industry-facing reports by clicking the links below:

Thomas, M. et al (2023). Supermarket top-up of Healthy Start vouchers increases fruit and vegetable purchases in low-income households. Nutrition Bulletin, https://onlinelibrary.wiley.com/doi/10.1111/nbu.12627

Sainsbury’s Healthier Snacks eye-level health messaging Trial

We evaluated the impact of different types of using health messaging on purchases of crisps as part of a meal deal

Read the IGD Industry-facing reports by clicking the links below:

Tomova, G.D. et al (2024). Is eye-level health messaging effective in encouraging ‘healthier’ crisp choices, in the context of ‘meal deal’ offers? A controlled interrupted time series analysis of an in-store intervention. OSF pre-print, https://osf.io/3b8da/files/tzmkw

Pre-registered protocol: https://osf.io/3b8da/files/umjg3

ASDA Plant-based meat alternatives positioning trial

We evaluated the impact of placing placing plant-based meat alternatives directly next to their counterpart meat products at Asda.

Read the IGD Industry-facing reports by clicking the links below:

Pre-registered protocol: https://osf.io/3b8da/files/mqzj9

Lidl Healthy Swaps Trial

We evaluated the effectiveness of signposting shoppers to healthier swaps across a variety of products in Lidl.

Read the IGD Industry-facing report by clicking the links below:

Pre-registered protocol: https://osf.io/3b8da/files/84nkh 

Read the news articles associated with this research using the links below:

M&S Salad Positioning Trial

We examined the impact of placing four salad items in prime locations with Italian meals at M&S.

Read the IGD Industry-facing reports by clicking the links below:

Pre-registered protocol: https://osf.io/2fc7n/files/xysmc

ASDA Plant-based meat online messaging trial

Pre-registered protocol: https://osf.io/3b8da/files/2se47