In article ,
T i m writes:
Hi all,

What are the current 'rules' on those multiway trailing sockets as
would be found round the back of most PC's (+ printer, scanner, cable
modem / router) these days please?

I think I remeber something about there an indicator light light
showing they are on and possibly being fused (assuming the one in the
plug top covers it?) but do they also need a switch ..?

I doubt any of these are required. The danger with indicator
lamps is that someone might believe one. Obviously, the socket
block and cable need appropriate fuse protection, but that
would normally be covered by the plug top fuse.

Would it make any difference if they were to be used in an office /
shop environment ( assuming they are allowed in the first place if so
how please)?

I would suggest you make up some rules for yourself for extension cords
(regardless of number of socket outlets they have)...
Never daisy-chain.
Never use them as a substitute for getting the required number
of fixed sockets installed in the right places.
Always route the cable where it can't get damaged.
Always use high quality ones, not bargin basement ones.
Leads up to 12m long must be 1.25mm² conductors.
Leads up to 15m long must be 1.5mm² conductors.
Leads up to 25m long must be 2.5mm² conductors (which won't fit
into a standard 13A plug).
Don't use high current appliances like kettles and heaters with them.
Don't forget to get them inspected and PAT tested regularly.
Don't forget to get the installation inspected and tested regularly,
and review the loading on circuits which might never have been
designed to handle the number of appliances now commonly used.

--
Andrew Gabriel