I need to get a valuation of my bike for the insurance, how does this work? Is the LBS likely to charge for this?
The bike is a Santa Cruz Superlight I have built up from secondhand parts, do i need a quote for building the same bike from all new parts, or an estimate of it's current value?

Just price it up on CRC and add on quote plus labour. That's what I did and they were happy enough with that.

Supply pics to support your bits on bike.

I'm not sure if that will work, I don't have receipts for most of the bits.

neither did I

My LBS did it for me. I supplied a complete list of components and they done the valuation. My insurance company have said only with either reciepts or valuation by a shop will do. Plus photos showing the bike in that build.

any ideas what to do about things which aren't available? such as:
standard specialized stem
specialized enduro tyres
shimano hollowtech crankset
etc?

A bump for the mid-week crowd and also, has anyone done this in Edinburgh? Any of the shops here willing to do this?

I was also looking at the other bikes and thinking I might as well do them too, but how do I/LBS put a value on this:

I think the frame is the only remaining piece of the original bike, but it isn't available on it's own.

Dont forget to stipulate to your insurer that you want the bike replaced by your LBS otherwise your insurer may use a mailorder firm which means your LBS loses out.