The first phase of tests concentrated on samples of minced beef products being checked for horse and pork DNA, while the second phase involved samples of beef-based ready meals.
The third phase will include products marketed or labelled as containing beef as a major ingredient, including;
- beef dripping
- stock cubes
- stewing steak
- ready meals which contain beef that is not minced
More top news
Read Sadiq Khan's full victory speech, as the Tooting MP promised to be a mayor for "all Londoners".
Former footballer Frank Worthington has denied he is suffering from Alzheimer's - a day after his daughter said he was.
A list of results for London Mayor and the London Assembly