William Roache has been arrested on suspicion of raping a 15-year-old girl in the 1960s.
A man, aged 81, from Wilmslow, Cheshire, is being questioned at a Lancashire Police station, police said.
The offences are alleged to have been committed in Haslingden between April and July 1967, officers said.
Neither William Roache, who has played Ken Barlow in Coronation Street since 1960, nor his representatives have commented.
A Coronation Street spokesman said: “Given that a police investigation is under way it would not be appropriate to comment.”
A spokesman for Lancashire Police said: “An 81-year-old man from Wilmslow in Cheshire has this morning, Wednesday May 1 2013, been arrested by Lancashire Constabulary on suspicion of rape.
“The man will be interviewed at a police station in Lancashire during the course of the day.
“We take all allegations of sexual abuse extremely seriously and would encourage people with any information about sexual abuse, or anyone who has been a victim of sexual abuse, to come forward and report their concerns confident in the knowledge they will be investigated appropriately and with sensitivity.”
William Roache has been arrested on suspicion of raping a 15-year-old girl in the 1960s
Two police officers are stationed by the closed wrought iron gates outside the star’s home.
In March William Roache issued an apology after he appeared to suggest in a New Zealand television interview that sex abuse victims were being punished for behavior in “previous lives”.
The actor also said if there was anonymity for people making accusations of child sex offences, there should also be anonymity for those accused because of the stigma they faced even if innocent.
William Roache has an award from Guinness World Records for being the world’s longest-serving soap actor, having played Ken Barlow since Coronation Street’s first episode.
Michael Le Vell has been charged with a string of sex offences, including raping a child.
Greater Manchester Police said Coronation Street actor is also accused of indecently assaulting a child and sexual activity with a child.
Michael Le Vell, 48, who plays Kevin Webster in the ITV1 soap, faces a total of 19 charges relating to crimes allegedly committed between 2001 and 2010.
Michael Le Vell, whose real name is Michael Robert Turner, is due before magistrates in Manchester on February 27.
Alison Levitt QC, principal legal adviser to the Director of Public Prosecutions, said she had reviewed a decision not to prosecute Michael Le Vell following allegations made against him in 2011.
Michael Le Vell has been charged with a string of sex offences, including raping a child
She said: “I have very carefully reviewed the evidence in this case and I have concluded that there is sufficient evidence and it is in the public interest to charge Michael Robert Turner with a number of sexual offences.
“I have authorized Greater Manchester Police to charge Mr. Turner with 19 offences, including rape of a child.
“Mr. Turner has now been charged with criminal offences and has a right to a fair trial.”
Michael Le Vell, from Hale in Greater Manchester, has played the role of garage mechanic Kevin Webster for 30 years, making him one of the longest-serving performers in Coronation Street.
Coronation Street actor Simon Gregson – who plays Steve McDonald on the ITV1 show in UK – was caught on film when he decided to crash the stage at Manchester’s Hilton Hotel… in just a thong.
The cameraman who recorded the action was none other than Simon Gregson’s co-star Alan Halsall – who plays mechanic Tyrone Dobbs – which was swiftly posted online for all to see.
The event which raised funds to support cancer prevention was hosted by actress Sally Dynevor (Sally Webster), who has battled the illness in real life.
Simon Gregson’s antics began as Sean Tulley – Anthony Cotton in the prime time soap – performed on the microphone while the nearly nude actor swept (literally) on to the stage with a broom in tow.
Simon Gregson crashed the stage at Manchester’s Hilton Hotel in just a thong
From one side of the stage to the other, Simon Gregson, 37, pushed the cleaning instrument back and forth before moving to the front and kicking some debris off the stage.
He then approached his co-star, wrapping a friendly arm around his shoulder before kissing Sean three times on his face.
The former I’m A Celebrity Get Me Out Of Here contestant was clearly unimpressed by the naked actor’s affectionate gesture and soon enough Simon was sweeping the floor again.
But not letting the earlier rejection sour his mood, Simon Gregson wiggled his bum at the audience, who loved the display so much he treated them to another shake.
With a cheer from the audience, Simon Gregson left the stage and maybe leaving some of his dignity there too.
A soap source told the Daily Mirror: “Simon brought the place down. He’s a real joker. He probably had a bit of Dutch courage to give him the confidence to strip down to a thong.”
He later continued the joke on his Twitter page, writing: “All the Corrie guys did a great job. Some loony got his bum out but apart from that it was a great night.”
And the wild times didn’t stop there with Kym Marsh, Catherine Tyldesley, Marc Baylis and Simon tweeting a snap of them all in bed together.
Actor Geoffrey Hughes, best known for his roles in Coronation Street and Keeping up Appearances, has died aged 68, his agent has said.
Geoffrey Hughes, who was known to millions as Coronation Street binman Eddie Yeats in the 1970s and 1980s, died “peacefully in his sleep” on Friday night.
It followed a “long courageous battle” with prostate cancer, his family said.
Geoffrey Hughes, who lived on the Isle of Wight, was also known for his roles as Twiggy in TV comedy The Royle Family and Onslow in Keeping Up Appearances.
He had thought he had beaten prostate cancer in 2009, but was told it had returned after collapsing at home in 2010.
Actor Geoffrey Hughes, best known for his roles in Coronation Street and Keeping up Appearances, has died aged 68
Geoffrey Hughes first appeared in 1960s shows such as Z-Cars and The Likely Lads. He was the voice of Paul McCartney in the Beatles film Yellow Submarine.
Other roles included Vernon in Heartbeat and Uncle Keith in teen drama Skins, guest-starring in episodes of Doctor Who, Casualty, Boon and The Upper Hand.
A Coronation Street spokeswoman said: “We are very sad to hear of the death of Geoffrey Hughes.
“He created a legendary and iconic character in Eddie Yeats who will always be part of Coronation Street.
“Everyone connected with the programme sends our sincerest condolences to his family.”
Coronation Street star William Roache, who plays Ken Barlow, said: “I am so sorry to hear about Geoffrey. He was a warm, lovable actor, with great comedy timing.
“He will be greatly missed, one of the Street’s memorable characters.”
Helen Worth, who plays Gail McIntyre in Coronation Street, said: “Geoff was a very dear friend for many years, and I’m very sad to hear the news of his passing.
“He was a master of gentle comedy and brought pleasure to so many people. He will be sadly missed.”
Sally Lindsay, who played barmaid Shelley Unwin in Corrie, wrote on Twitter that her first TV job was playing Twiggy’s girlfriend in The Royle Family, “and he was so kind RIP lovely man x”.
Geoffrey Hughes was appointed Deputy Lord Lieutenant for the Isle of Wight in 2009, providing the official link between the island and royalty at formal events.