That's because Nicholas Lyndhurst speaks nothing like Rodney - just listen to him doing an interview.
He lip-synched all those lines and they dubbed John Sullivan's voice over the top.
Fact.

(not aimed at you, by the way, just fed up at national media who've given us sod all credit for Sunday but are overjoyed to stick the knife in)

Honestly, between the reporting of this and of Ed Sheeran's supposed 'gatecrashing' Amorim's Sky interview, I'm starting to think certain areas of the media will grab any excuse to put the little, above their station clubs down rather than give credit for a job well done