A food waste "catastrophe" is being created by the horse meat scandal, experts have said.
Findus has confirmed that 180,000 of its lasagnes have been withdrawn from sale after they were found to contain up to 100 per cent horse.
Tesco would not say how many packs of its spaghetti bolognese had been taken off the shelves in the latest scare to emerge, but the Food Standards Agency said the total stock cleared from the shelves would be "millions of units".
An FSA spokesman said the unwanted products would be "destroyed".
The Key Products Recalled:
- Findus beef lasagne: 320g, 360g and 500g portions
Aldi: Today's Special frozen beef lasagne and Today's Special frozen spaghetti bolognese Tesco: Everyday Value spaghetti bolognese Tesco: Everyday Value eight-pack of frozen beef burgers; Tesco four-pack of frozen beef quarter pounders and Flamehouse frozen chargrilled quarter pounders.
When horse meat was first found in Tesco beef burgers in January, 10 million products were withdrawn from sale.
Food writer and author Rose Prince said: "It is a catastrophe, made so much worse by the scale of it all.
"If this was a small butcher caught putting meat into a pie and not labelling it properly, it would be just as bad, but not a catastrophe in terms of the environment and waste.
"This shows how out of control it is. There's not much you can say except it's terrible and made much worse by the scale.
"At some point, somebody's got to say that we have to localise the supply."