https://www.fwi.co.uk/news/government-withholds-brexit-food-price-report.htm
So the government is withholding a report regarding the impact on Brexit will have on food prices. That's something that will impact virtually everyone in the UK - and people should be aware.
A hard Brexit (which I hope we don't face) could have the following impacts though:
lack of customs facilities, leading to delays at the border (important for fresh produce) - for both imports and exports, which would lead to shortages at the shelf
loss of migrant labour vital for UK agriculture, food processing, and retail
loss of access to the EU markets (this is complex: on the one hand, this can mean oversupply in some sectors and theoretically lower prices, yet is also likely to mean sector shrinkage in those sectors - possibly very quickly), which can come from tariffs or lack of regulatory compliance
Loss of access to EU trade deals and resultant higher import tariffs from reverting to WTO rules. There are also difficulties in dividing up existing Tariff Rate Quotas, meaning that matching the current EU tariff schedule very challenging. To an extent, this is in the UK's hands because we can unilaterally impose zero or close to zero tariffs (but to do so, we would devastate our own agriculture and food processing sectors, so that might not be the greatest idea)
Substantial threat to the food processing sector due to Rules of Origin and the EU's system of tariff escalation, which could see rapid sector shrinkage. A lot of food processed here gets exported to the EU, if that suddenly stops then there will be bankruptcies
Loss of EU subsidies and the difficulties which may come from attempting to pass replacements at the WTO
Further currency losses can drive the cost of imports up
Cost of customs checks for businesses
I don't think it's responsible of the government to suppress the factual reality. Reality can't be held off forever and the public should know the contents of these reports that will make an impact on their day to day lives.