Free and premium horse racing double tips each day. Selections are uploaded the evening prior to racing and the free double is available on the home page of their web site, without the need to register.
For the free tip they aim for the double to be priced around 20/1. The premium double is available via monthly subscription and is usually at lower odds, with a much higher chance of winning. They offer a slight discount if you signup to their yearly option.
They offer a 7 days free trial to their service, with an option to renew for an additional week trial.