A pregnant mum claims she vomited after she found a 'rubbery false nail' in a Marks and Spencer sandwich.
Bushra Perkins bought a beef and onion sub roll from the M&S shop at The Buck service station on the A303 in Andover, Hampshire, last month.
The 37-year-old, who is six months pregnant, claims she had polished off most of the item before feeling something 'rubbery' in her mouth.
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Bushra said that when she realised there was a 'false nail' in the sandwich she vomited.
Now Bushra claims she has been told she must wait 'four to six weeks' for M&S to investigate her complaint and has vowed never to shop at the supermarket again.
M&S said they were now investigating.
Bushra, from Northampton, Northamptonshire, said: "I'd eaten most of the sandwich already which makes me feel really sick. I took a bite into it.
"It had that rubbery feeling that gel nails have, I could feel that in my mouth.
"I thought 'what the hell is that' and I fished it out. It was dirty looking.
"I had a feeling in my stomach that I was going to be [sick] then I had to get my husband to stop off at the nearest service station and I was really sick. It's disgusting.
"It's hard because I had to get this thing out of my mouth.
"It was quite disgusting, it's someone's nail, you use your hands for everything.
"I'm disgusted at their level of food hygiene. It's not just that someone's nail had accidentally dropped in. They should be wearing gloves."
Bushra claims she immediately contacted M&S and was told it could take up to six weeks for them to contact her about the result of their investigation - leaving her feeling like they 'don't care'.
Six-month-pregnant Bushra has now said she will never touch a pre-packaged sandwich again after being put off by her experience.
Bushra said: "I'm nearly six months pregnant and it made me feel pretty sick.
"It was one of the Marks and Spencer in a service station and it was a pre-packed sandwich. I'm never having a pre-packed sandwich again, I'm so disgusted.
"I contacted M&S immediately. We'd been away for the weekend and we were on our way home.
"I wanted to let my own friends and family know not to get them anymore because it's disgusting.
"They then messaged me on social media and asked me to go into the store next time I'm shopping and dropped it in.
"Do they really think I'll be shopping at Marks and Spencer now, given someone else's nail was in my food?
"I won't be buying food, or anything else, from M&S.
"I was a bit shocked. I told them I wouldn't be going there.
"I posted it and tracked it next-day delivery, they said 'as you can appreciate, we work everything in date order'.
"I can't really. There's probably a girl going round not wearing gloves and making food so no, I can't appreciate it, really.
"I got an email from them on Monday to say it would be four to six weeks for the supplier to do a report.
"It said when they have the report they'd be in touch again to update me on the findings of the investigation and in the meantime, accept their sincere apologies."
Now Bushra says she feels the company is failing to show enough urgency in their investigation and fears the person who made her food could still be wearing false nails at work.
Bushra said: "I don't really feel, given it's a significant food hygiene issue, an article from someone's dirty nails, that four to six weeks is appropriate.
"They don't seem to care and there isn't any continuity with this. I'm not convinced that anybody really cares and it's just one of those things.
"I'm pregnant, I'm quite far along now and it's not the kind of thing you expect to happen.
"You're already uncomfortable in a lot of ways and then to have something like that, it was awful."
An M&S spokesman said: “We are in contact with Ms Perkins and are investigating her query.”