Thanks a lot for the replies, I'll speak to the landlord when I move about drilling. It's a newly done out room but I can offer to save him about £300 a year on council tax due to me being a student, so I'm hoping I can get a few drill holes out of that if I sort them out at the end.
I'll look at the door frame when I get there also as that may be a better idea...
Your set up looks cool too Matt, I will have to investigate and see if that could be an option to avoid damage all together!
Really hoping I can get one as I'm moving to Leeds for a year and wont know anyone so hoping to just climb and get stronger, if anyone is from Leeds then let me know as I'll bge keen to find some partners (tough I don't climb very hard.... yet)