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Tory MP Nadine Dorries yesterday threatened to nail a Sunday Mirror reporter’s testicles to the floor – for asking how her daughter could work as her secretary when she lived nearly 100 miles away.

The controversial MP claims up to £35,000 a year of taxpayers’ money to employ Jennifer, 26, under House of Commons guidelines.

They allow for “secretarial support” at an MP’s Westminster or constituency office.

But when we told 56-year-old Ms Dorries we had discovered Jennifer lived in a ­Cotswolds village 96 miles from her mother’s desk in London and 89 from her Mid-Bedfordshire base in Shefford, before emailing a statement she took to Twitter to vent her spleen.

In an extraordinary outburst, she tweeted: “Be seen within a mile of my daughters and I will nail your balls to the floor… using your own front teeth. Do you get that?”

The rant came after the Sunday Mirror revealed last week how her business partner Andy Rayment also runs a business with a glamour model.

Our latest revelations are based on details in official Parliamentary records that show Jennifer is her mother’s “senior secretary” - a position that often calls for face-to-face meetings with constituents.

On Thursday Jennifer was at home taking her dog for a stroll in Willersey, ­Worcestershire.

(Image: Sunday Mirror)

A Commons official said: “It’s hard to see how she can deal with an MP’s electorate in the most efficient way when she lives nowhere near Parliament or the constituency.”

Jennifer is the second of Ms Dorries’ three daughters to work for her mum at taxpayers’ expense.

Her eldest, Philippa, earned up to £45,000 a year as her office manager.

When a storm broke in September about Jennifer’s job, Ms Dorries claimed she provided “value for money”.

Ms Dorries last night claimed her daughter did the 89-mile journey from her home to the constituency office in 80 minutes.

The AA’s online route planner says the fastest route is two hours, 12 minutes.

The MP said: “Jennifer’s main place of work is in the constituency, where she stays for some of each week.

“Her journey time is 1hr 20 mins. She does not claim from the staff travel allowance and covers all her own travel costs.

"Her journey time is less than mine from Bedfordshire to Westminster which is 1hr 30mins, as it is for all of my constituents who commute to London.

“I do not claim travel expenses and cover my own travel costs.

"I find your interest in both myself, out of 650 MPs, my daughters and their private business is questionable, irrelevant, bordering on harassment and rather creepy.”