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You can download the IEE article from Issue 14b - Spring 2005 wiring Matters http://electrical.theiet.org/wiring-matters/14b/recessed-luminaires.cfm?type=pdf

The OP has not given details on the application, but I don't think they are wall switches in the traditional sense; see his comment "Basically I have two lives which are switched digitally"

MK also do contactors (6220 & 6420) that might be more readily available, only downside is they make quite a "clunk" when energised.

You have to purchase the base and this is din rail mounted, and the base has screw terminals Check out rs components for other types

If I understand you correctly you can use a 2pole relay on switch B if loads are less than 10A then IMO RL01C ( http://c613539.r39.cf3.rackcdn.com/rs.pdf ) will do the job. Most wholesalers sell them Use switch B to energise the coil on the relay, you will need to feed a live through both...

Yep you don't see many pictures of fully populated CU with RCBOS.

You clearly don't know what you are doing when it comes to the electrical installation. A lot more relevant infomation would be required to provide a meaningful answer. Both of these electrical items could be very dangerous installed if incorrectly and they have special mention in the wiring...

read this guide from hager http://www.hager.co.uk/files/download/0/2801_1/0/junction_box_guide.pdf

Yes, they do.

http://en.wikipedia.org/wiki/Overcurrent

The supply cable looks like a some 3core SWA (10mm or 16mm) in old colours I would be interesting to see how the gland is made off.

It is a bit messy. You appear to have forgotton to apply the numbering sticker for neutral and earth terminals - its probably still in the box. Normal convention for the MK consumer unit would be to have the main earthing conductor and bonding on the very right So your neutrals and...

could be the cord is snagging inside the fitting, or the switch is on its way out.

A number of factors would have to be considered What it is power rating (in watts) of the new hob? What it is power rating (in watts) of the new oven? What is cross sectional area of the cable supplying the hob and oven How is the cable routed to the oven/hob - does it go through any...

Rexel Senate do a similar fan with timer for £72.88 plus VAT (similar to the Manrose and TLC fan) The code is SFAN100SFXT

Well the spec says 150mm.

You should be able to carry it out yourself if you are competant, HSE have some examples and a good FAQ http://www.hse.gov.uk/risk/casestudies/index.htm http://www.hse.gov.uk/risk/faq.htm

I don't really understand the point you are trying to make! No one is suggesting that all the older systems have to be upgraded, in fact the regs make provision for this, however any new work (on existing or new installations) should comply with current regulations.

We are not working to regulations that applied to installations that were designed 50 years ago, the latest set of regs came out 2008 with an ammendement last year. The purest intrepration of reg 314 (division of circuits to minimise inconvenience...etc etc) would be the use of RCBOs, imo due...

Perhaps it is because the OP is not in England or Wales?