I think that sometimes there is nothing else to do under this first past the post system.
I cannot vote Tory as their policies so not sit well with me;and in my constituency the Lib Dems were a credible alternative (but I do not think they continue to be as their role in the coalition has been so unpopular); Labour don't stand a chance here and never have. Nothing I do will stop the Tory candidate getting in, so I think I might vote green. The tactical vote would have been Lib Dem, but no longer.
Estranged Son and Future Granddaughter
To think that London, or anywhere else for that matter, does not belong to any one demographic