Well, taking advice from fellow cyclists, I bought 2 reels of Warm White TLS LEDs at 24V and 4.8W/m, IP67 rated, and 2 No. 35W drivers. With a spotlight and an LED bulb, that lot cost me £180!! This is top of the range stuff, so I hope it all works and lasts.....
Fitted part of them today: dog's wotsits. We have a peach/cream colour on walls and ceilings, and the LEDs pick put the sparkly bits in the test tiles we have propped up on the walls.
Some more to fit 2mrw, but these look like the best decision I've made since I asked my then girlfriend to marry me 40 years ago.
It's hosing down outside, but the half-lit new kitchen, even without the unit doors and the tiles looks a million dollars.
Many thx to all respondents, in particular
@PK99 who prompted me to go upmarket. I could have bought similar kit for 50% of the cost, but sometimes, you really do have to splash the cash.