UK party leaders set their plans for the upcoming election

The transcript discusses the upcoming election campaign, focusing on Brexit's influence. Nigel Farage will not run as a candidate but will be active in the campaign. Boris Johnson is firm on no further Brexit delays but open to extending the transition period. The Tories plan to end a benefits freeze, which Jeremy Corbyn criticizes. Opinion polls show the Tories leading, while the Lib Dems, Plaid Cymru, and the Green Party form a Remain alliance. Parliament will elect a new speaker, and the campaign will formally start, leading to polling day on December 12th.

What challenges does the Universal Credit system pose according to the text?

What is the expected timeline for the election campaign mentioned in the text?