light bulbs

Hi. Would anyone happen to know what this rather unusual bulbs are please? They are around 7cm across and fitted to the under cupboard lights in my kitchen. Wondering if I can get replacement bulbs or if not if it would be mains power new fittings I’d need installing. Many thanks!

Good afternoon, UK-based DIY-ers A query from a DIY-novice here: In their great wisdom, the builders of my flat decided to install L1 light fittings to all 6 of my ceiling lamps. L1 bulbs don't serve my purposes, so I want to convert these L1 light fittings into something that can take E27...

I have this light in two rooms. The electrician needed two men to change bulb in one room. Now other bulb needs changing. I can't even begin to see how it comes apart, but I want to change it myself rather than calling someone in to do it! Does anyone have any experience of how this comes to...