What penalties are envisioned for offences related to obstructing the electoral process?

Representation ofthe People Act 1983

Art. 60 - 85

http://www.legislation.gov.uk/ukpga/1983/2

finenot exceeding level 5 on the standard scale.

fine not exceeding level 5 on the standard scale,or to imprisonment for a term not exceeding 6 months, or to both.

declare [to a constable] his name and address and,if that person refuses or gives a false name and address, he shall be liable onsummary conviction to a fine not exceeding level 1 on the standard scale,

This subsection doesnot apply in Northern Ireland.