Am I over taxing my extension lead power system?

[Automission]

I'm in the UK, so it's UK fused. I'm running seven plugs from a six way extension lead.
I have five plugs put into one of the sockets on the lead, one of them has a two way adaptor plugged into it with two plugs placed into it. So there are seven plugs running from it.

The devices areas follows:
(Updated with Amp usage for each device, please note, this is what the plug labels it as using. )
HDTV - 10 amps
Subwoofer - 13 amps
Audio reciever - 13 amps
PS3 - 5 amps
Sky Box - 3 amp
360 - 10 amp
A dual plug extension lead - 4 amp

I may be running four/five items at once. I only use the second extension lead for running an electric fan or a hair dryer, so thats not used all the time. I think at worst I may run six items at once.

Am I in danger of blowing a fuse, blowing up my equipment, etc?