The Liberal Democrat website 'Lib Dem Voice' has set up a ranking system for all MPs which assesses how authoritarian they are based upon their voting patterns for key legislation over the last 5 years. The categories are below:
Freedom of Speech, ID Cards, 90 days detention, Abolition of Parliament Bill, Trial without a Jury, MPs' Expenses (FOI exemption), Control Orders, Extradition Act 2003, Government intervention in collection of evidence, DNA database
You can find the results page for Tom Levitt here. In all of these 10 categories, Tom Levitt scores 10, giving him a score of 100, the maximum possible.