Ribble Valley MP Nigel Evans urged ministers to do more to protect community pubs after laying out the struggles faced by The Durham Ox in Longridge.
He told a debate in Westminster Hall how the pub's landlord Irene Nuttall is forced to pay more for the beer she sells because she is "tied" to buying from Heineken UK.
She pays Heineken £127 for an 11 gallon barrel of Fosters, which would only cost £92 if bought from a wholesaler, and £144 for a barrel of John Smith's when it could be bought for £88, he said.
Mr Evans also said she has to fork out £594 a month to have Sky TV - a charge that is based on the rateable value of the pub.
He said: "As we know, in a lot of villages and towns, a pub's rateable value could be extremely high, but the number of people in the pub at any one time might be relatively small.
"All the profit that a pub makes by getting people in who are attracted by the magnet of Sky Sports is completely lost as a result of the £594 charge.
"Something desperately needs to be done about the pricing of Sky TV.
Pressure
"It is an attractive venture for pubs wishing to get people through the door, but surely they should not be clobbered to such an extent."
Mr Evans also blamed aggressive supermarket pricing and the regular hikes in beer tax for piling more pressure on pubs.
Laying out The Durham Ox's financial outgoings, Mr Evans said the pub has to payout £1,500 a year for building insurance, even though Mrs Nuttall does not own the building, £400 month on electricity and £850 a quarter for gas.
He added: "She finished by saying 'I wonder why I'm doing it.' Considering all the pressures on one pub, I think exactly the same thing."
Preston's pubs have been closing at a rate of one a month during recent years.
Some areas of the city now have just a quarter of the pubs they had 10 years ago, with traditional 'working men's' pubs outside the city centre suffering the biggest blow.
During his wide-ranging speech, Mr Evans also criticised the government for introducing its strict smoking ban.
"We are all faimilar with seeing people standing outside pubs having a cigarette in sub-zero temperatures, in the rain and the snow with all the elements against them.
"Hypothermia has become a smoking-related disease under this Government," he said.
Licensing minister Gerry Sutcliffe said: "Anybody who stood up and said that every pub in the land could be saved would be completely wrong."
On the issue of Sky TV, he added: "I have met Sky and been told that it will change how it handles rateable value. We think that will be a step in the right direction."