Hi, I'm shifting to a London job that will involve cycling from Waterloo station into town. I'm wondering how safe it is to leave an oldish bike in the racks at Waterloo station overnight and over weekends? It's an old heavy Claud Butler, and of course a D lock and cable. Also wondering how often they are full at 6.30/ 7pm, which is when I would be parking it and rush for my train. The alternative is to use Santander bikes every day. All advice much appreciated - thanks!