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Hello and welcome. I'd brace yourself for some negative comments. Do you mean dimmable GU10 compact fluorescent lamps? They have a pretty poor reputation for reliability and putting them inside fire rated housings won't help that. Are you aware that this work should be notified to your...

It's doesn't explicitly limit it, but it doesn't have to. By default everything is notifiable. The only way round that I could see is if the equipment fed from the fused spur was not regarded as part of the installation. That's hard to argue for multiple interlinked smoke alarms however.

Agreed. It allows the addition of fused spurs to an existing ring or radial circuit without notification. The only things it mentions can be connected to them however are socket outlets and lighting points. It isn't sufficient for part of the work to come under an exemption, all of it must...

Are smoke alarms socket outlets? Nope.

I'm sorry I can't but hopefully someone else can. Probably an Electrical Installation Certificate or Minor Electrical Installation Works Certificate to say the work complies with The Wiring Regulations BS7671. Clarifying can't hurt though. It is possible, but to be honest the council's...

The topic title is "Baby proofing plug sockets". Do you really expect a neonate to understand verbal instructions? :roll:

The only way that can legally be done is if the LABC employ someone of their choosing to inspect and test the work. They don't do it for free though, and that is what the additional fee of £350 is for. As you have neglected to follow the correct procedure and arrange this before the work...

The authoritative document on what is notifiable is The Building Regulations. However, that has non-electrical stuff mixed in with it. An easier to read and nearly as authoritative document is Approved document P. Everything is notifiable by default, unless it falls under one of the...

That comes to £350.40. I'm guessing you didn't pay this amount following the first inspection? You therefore implied that no Part P electrical work would be carried out by a person or company not registered on a Competent Persons scheme. You could go the regularisation route - but I think...

In a domestic setting and outside of the kitchen, I'd dispute that. I've run 16A radial power circuits, where reference method 101 was required and a rewire in 4mm² was not feasible. In fact I've lived in a rented house that only had a single 20A circuit for all the sockets including the...

I don't think that's quite what the OP was suggesting. It was a 2.5mm² RFC with a 4mm² multi socket unfused spur (presumably on a 30A or 32A protective device).

The original submission to building control was for a loft conversion. Assuming for the moment that it was a "Full Plans" submission, for the plans to be approved by building control they would want to see smoke positions included. That's an aside though. When the OP applied for building regs...

The shortest leg is likely to have a lower resistance. Both legs will have the same voltage drop (Kirchhoff's Voltage Law). Therefore the shorter leg is likely to have a larger current flowing through it (Ohm's Law).

Some arguments against: 1) It's not normal practice so will surprise anyone working on the installation in the future. 2) It isn't the same as having several sockets close together on the ring, because the sockets aren't close together. 3) You'll have to do more design work, as it isn't...

There are a couple of different types of certificate you could be being asked for. One is to say the smoke alarms have been installed and tested in accordance with BS5839. I don't know much about those. The other is an Electrical Installation Certificate (EIC) which states it has been...

Do you mean you measured the width of the cable and it was about 16mm? If so, it is most likely 10mm² conductor cross sectional area, which is confusingly often referred to as 10mm cable. This might be OK, or it might not. It depends on the route the cable takes. The RCD will need to be...

Sounds like you are "good to go". Follow yorkspark's instructions.

p.p.s. Yes, you can have the old light on one switch and the new light on the other switch of the 2 gang. Both the suggestions will do this.

Well you need a cable of some sort going to the second light. Otherwise it'd be wireless power transmission! Two possibilities are: 1) A 2 Core + Earth between the two lights (in addition to the 3C+E you have between the switch and old light) 2) A 2 Core + Earth from the switch to the...