I try to go once a year, but not really as a "profi". I never went in UK.
In Cologne they have a ticket like the national lottery. You can choose winner, place, twin (2 in the top 3), accumulation... all sorts of stuff. The form is quite easy to understand, and if (unlike me) you have some experience, you should have no problem.
http://www.koeln-galopp.de/wettsch.htmThe main problem is that all races are rigged. The first race I always (!) get something out of it. The remaining races are also rigged, but always against my bets.