Kitchen Lighting wiring help please

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I have a shitty old fluorescent tube under my kitchen units.  It is controlled by one wall switch.  It is connected by a thick grey mains wire with 3 core wires (black/red/earth) That is hidden under plaster but comes out under the kitchen unit and into the fluo tube.

I am replacing it with a mini LED strip (about 55cm long each).  It has its own  lead, so I will have to connect the grey wire to the white LED unit lead.  Thing is, the white LED unit lead is 2 core, so no earth.

What should I use to join the leads and what should I do with the earth wire?

[Feanor]

chock-block or a small junction box containing chock-block or 3 other connectors.

Terminate the earth wire in the chock-block, and leave it un-used.

The grey cable will be 1 or 1.5 mm², and the colours are Red = Live, Black = Neutral, bare = CPC ( earth ).
The luminaire trailing flex will probably be colour-coded Brown = Live, Blue = Neutral.

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Ta

[Jurek]

Umm... All good, but is there anything between the 'grey' mains wire and the LEDs to drop the voltage down from 240 to something a bit more LED-friendly?

Or have I been careless in my reading?

[Feanor]

Im presuming the luminaire is designed as a 230v drop-in replacement fitting!

Obviously, if it's a raw bank of LEDs, then the necesary power brick needs to be added into the mix!

[Jurek]

Im presuming the luminaire is designed as a 230v drop-in replacement fitting!

Obviously, if it's a raw bank of LEDs, then the necesary power brick needs to be added into the mix!

'Zactly my point 

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It  is meant to be mains voltage.  I'm not that dim 

But thanks to both of you for the help