hey Graham, I'm British Too!
Not sure if this is very usefull or not, but a nurse said something to me a while ago which is actually quite obvious when you think about it...
If you are seeing red blood then in a way that is a good thing - the fact that the blood is coming out bright red means that it hasn't been discoloured by your system and is therfore not deep inside your guts, but instead towards the end - hopefully therefore it is only a minor problem, probably just something getting irritated when you poop
If the blood was more darker and more discoloured that would indicate a more deeply entrenched problem
So hopefully then it is nothing to worry about, but if it does persist and if it is painfull, it would probably be a good idea to get it checked out by a doctor to put your mind at rest