Most stores – including Asda and Morrisons – now have marshalls on the doors to ensure people put on a mask before entering.
Some branches have aisle commissioners to ensure compliance with masks, hand washing, and social distancing streets.
At the same time, some supermarkets have started to introduce limits on the number of items people can buy.
It comes after the panic buying ahead of the nationwide lockdown in March, which saw shelves stripped down.
Tesco and Morrisons were the first to see new limits introduced last week – including cleaning supplies and basic products.
Sainsbury’s has limits on a number of medical items and masks.
These are the last rules.
The first major grocer to bring back rationing announced purchase limits on a line of cleaning products
In a statement to shoppers, a spokesperson for the supermarket said, “We are introducing a limit on a small number of key products, such as toilet paper and disinfectant.
“Our stock levels for these products are good, but we want to make sure that they are available for everyone. “
The chain introduced a limit of three items for products, including flour, dried pasta, toilet paper, baby wipes and antibacterial wipes.
A Tesco spokesperson said: “We have good availability, with a lot of stock to go, and we encourage our customers to shop normally. To ensure that everyone can continue to buy what they need, we have introduced bulk purchase limits on a small number of products. ”
Tesco added that its online capacity had nearly doubled, from 600,000 weekly delivery slots in March to 1.5 million in September.
A spokesperson said: “We see no evidence of a change in customer behavior.
“We currently have good availability in our stores and the same can be said for our online slots so we will not comment on panic buy preparations as we are not seeing any panic buying so we are not implementing. no product limits for the moment. ”
Sainsbury’s website reads: “We are experiencing extremely high demand for certain products and as such have introduced quantity restrictions.
“We have started removing limits on the number of certain non-essential products you can buy. Limits will remain in place for pain, cold and flu relief products and Type IIR approved face masks.
Cold and flu products that contain pain relievers are restricted by national regulations.
In a letter to customers, Managing Director Giles Hurley wrote: “I want to assure you that our stores remain well stocked and ask you to continue shopping with care.
“You don’t have to buy more than you usually would. We have remained open to our customers throughout the pandemic and will continue to make daily deliveries, often multiple times a day, for all of our products. “
A spokesperson for Lidl said: “We currently have no product shortages and have good availability in stores. As such, there are no restrictions on any of our products. ”
Earlier this week Morrisons and Asda also said they would reintroduce marshals to the front of their stores to ensure coronavirus measures are followed.
On Monday, the government said it would now be mandatory for store staff to wear headgear, while fines for not wearing them would also increase.