Bleeding radiator

[abstibus]

I have a very small double radiator in one of my bathrooms. It is heating at the bottom but not at the top, so I assumed I needed to bleed it. However, there is nowhere to put the radiator key (no keyhole or whatever it's called at the top of the radiator).Can anyone advise me what I can do to remedy the problem?
Please, if you can answer me, could you make the answer as simple as possible - I can manage the washing machine etc. but that's about it.
Many thanks

[ChuckFickens]

What an inconvenient place to put a bleed valve!

[abstibus]

docspock
Thanks for such a quick reply. I have checked behind and no valve, but there are two round thingies like nuts at the end of each panel at the top. Would that be where I should bleed it?
Tia

[deggers316]

yes the bleed key should fit inside one of these nuts look for a small triangular piece inside one, thats the bleed screw

[deggers316]

just loosen it DON'T take it out the air will escape till water appears then tighten it back up

[sandmaster]

Chuck - you are right. I have one radiator with a bleed valve at the back and it is a real pain!!

[gredosman59]

i had a similar problem in my flat in spain, all it needed was a small coin, which i used as a screwdriver to loosen a small screw, which released some air for about 10 seconds, hey presto!!

[abstibus]

Thank you all - problem solved.