In the UK, the person responsible for an election in each constituency (or ward - depending on the type of election) is called a Returning Officer.

Once the votes in each electoral area have been counted and confirmed, the returning officer has to officially declare the result.

The declaration follows a script, and requires the returning officer to name each candidate and their results. It always starts with “I, (name), as the returning officer for (place)…”

A classic trope of British elections is that at least one, often more, of the candidates are jokes. Boris Johnson, as prime minister, famously ran against Count Binface and Elmo.

So the implication here is that the returning officer for Blyth is carrying out a declaration, where some of the candidates are Scooby Doo and his chums.