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AHDB Potatoes weekly price reporting and the Weekly Average Price Survey (WAPS)

2 August 2017
What is WAPS?
The Weekly Average Price Survey is a key part of AHDB Potatoes price reporting. It is a survey which produces indicators of the week by week direction of ex-farm prices.
Survey outputs
The survey provides two average prices (in £ per tonne) which are defined as follows:-
  1. GB weekly average price  – an average of free-buy and contract purchases bought direct from growers in the past week across all market sectors
  2. GB weekly free-buy price – an average of free-buy purchases only bought direct from growers in the past week across all market sectors
The outputs are published in Potato Weekly - a regular publication summarising the latest pricing information. Potato Weekly is available to all, via the AHDB Potatoes website, and to a subscription list on email. To join the mailing list, please send your name, address and contact details to (link opens new email)
Survey sample
A sample of 22 purchasing companies, including grower groups, provide volume and value data relating to free-buy and contract purchases made from growers.
Annual audits
Due to the importance placed on the data, AHDB Potatoes periodically reviews the systems used so as to ensure reliability and credibility of output.
The following guidelines are applied by all audited purchaser contributors so as to ensure a consistent approach WAPS guidelines.
As part of this programme, a full audit of purchasing contributors was conducted in 2013, 2015 and 2017 and a partial audit in 2014, 2016/17 and 2017/18. Another full audit is due in the winter of 2019.