Mainstream, the campaign against extremism, has recruited Maureen Lipman’s “Beattie” one of Britain’s best-loved TV characters, to talk of her fear that Jeremy Corbyn has “an ology” in extremism Beattie, star of the iconic BT adverts of the 1980s and 90s, has released a video where she talks of her concern about Corbyn’s Labour Party – with its antisemitism, bullying and extremism. Lipman has in the past campaigned for the Labour Party…