This is what they think of us.
http://policy.greenparty.org.uk/tr.html
Motorcycles
TR320 Smaller, low powered motorcycles are generally preferable to cars (especially those with a single occupant) as they take up less road space and are more economic consumers of fuel. However, the Green Party does not wish to see increased use of motorcycles because they emit pollution and noise and can endanger road users. The aim is to encourage much less use of high powered machines and for low powered machines to offer an alternative for those who currently use these or cars and could not transfer to more sustainable modes.
TR321 The Green Party would take measures to encourage a transfer of motor cycle manufacture and use from larger, powerful machines to less powerful ones including scooters and mopeds. These would include setting and enforcing strict noise limits and, for higher powered machines, speed limiters.
TR322 For the safety of other users, the Green Party does not feel it appropriate for motorcyclists to be able to use any priority measures put in for pedestrians and cyclists, including those shared with public transport.