Edited sentence: For example, in Somerset, they have cut back 20 local bus services.In Cornwall and the north-east of England, Lib Dem candidates promise to abolish the Barnett Formula, which delivers Scotland a fixed slice of government spending.In power, they cut it.In public, the Lib Dems support public transport to help the tackle global warming.Liberal Democrat policies also include allowing people to appear in and purchase hardcore pornography at the age of 16.The Lib Dems are in favour of road congestion charging as a national policy, but campaigned against it when the issue was the subject of a local referendum in Edinburgh.The Liberal Democrats believe in giving votes to convicted prisoners, specifically including Ian Huntley.They also advocate a water tax; a dog tax; a parking tax; smoker's tax; a new homes tax; a business land tax; a development tax; an exchange and capital flows tax; a higher landfill tax; a waste tax; a plastic bag tax; a pesticide tax; an overseas territories tax; a double whammy inheritance tax; an energy tax; a pensions tax; an airport tax; and a congestion tax.They also advocate allowing 16 year-olds to drink alcohol in pubs and the abolition of Anti-Social Behaviour Orders (ASBOs).Yet in Scotland, the Lib Dems pledge to deliver "hundreds of millions" more for the Scottish block grant