Forty percent of all lamb takeaways are 'contaminated' with other meats, according to a survey by consumer group Which?.
The research - timed to coincide with a similar study from the Food Standards Agency - showed that lamb kebabs were particularly affected, with 67% containing chicken and beef.
The watchdog said that, of 60 takeaway lamb curries and lamb kebabs tested in Birmingham and London, 24 were found to contain other meats, while seven were said to contain no lamb at all.
Which? is calling on the government, local authorities and the FSA to crack down on 'food fraud' in order to restore trust following last year's horsemeat scandal.
Bosses at consumer watchdog Which? today slammed test results which found more than two-thirds of lamb takeaway food in Birmingham were not pure lamb.
Executive director Richard Lloyd called on authorities to crack down on traders who mislead their customers over what they are eating.
Shocking food test results today revealed that more than two-thirds of lamb takeaways in Birmingham are not pure lamb - with some containing absolutely no lamb whatsoever.
Consumer watchdog Which? found that of the 30 samples taken in the city, 16 had other meats thrown into the mix - while five contained no lamb at all.
The second city fared significantly worse than London, where investigators found just two of the 30 samples taken contained no meat, and eight which had other meats mixed in.
Even more worrying, the meat in five of the samples containing no lamb could not even be identified - meaning it had probably been badly overcooked or repeatedly re-cooked.
A beef burger bought from a fast food outlet in Walsall has been found to contain horsemeat.
The Food Standards Agency made the discovery as part of the UK-wide sampling of all beef products. The burger from 'Pig Out' was manufactured by King Fry Meat Products.
Birmingham City Council's environmental health team have found extracts of pork in Halal burgers.
The tests came after the horsemeat scandal where hundreds of beef products were found to be contaminated.
The product that was found to contain pork protein was Humza Brand Chicken Burgers in pack of 20 with a best before date of 10th May 2013.
Local butchers in the West Midlands have reported a boost in business by as much as 33% following the horsemeat scandal.
Charlotte Grant reports.
As part of National Butchers Week ITV News Central has been talking to staff at Walter Smith butchers. They have 17 stores across the region.
They are reporting a significant increase in the number of customers coming into their stores, which they attribute to the horsemeat scandal.
Women butchers are now also a key part of their business.
Teressa Malsbury explains that women butchers are more involved now than they ever were before.
Robert Jones is the Director of Walter Smiths butchers. They have 17 shops across the region.
He says that the recent horsemeat scandal has driven more customers into his shops and that people have now been made aware of the benefits of a local butcher.
- Leicestershire County Council supplies 224 schools across the county
- The council has confirmed there is no health risk to pupils
- A second item tested, a beef grill steak, was found to contain no trace of horse DNA and has been reinstated on menus
Horsemeat has been found in minced beef served in school dinners in Leicestershire. Leicestershire County Council says tests show the beef contained less than 1% trace of horse DNA and has been permanently removed from school menus: