This is from an elderly relative who did not realise that the light bulb can be replaced and so bought another lamp before asking me about it and did not tell me until they wanted it taking to the tip!
Here is a liisting for the bulb: https://www.amazon.co.uk/ARSUK-Replacement-Fluorescent-Daylight-Sunlight/dp...
and here is how to replace it: https://www.youtube.com/watch?v=zqyUTQaKfk0
Daylight reading lamp - only needs new bulb (Barnard's Green WR14)
This offer has been gifted to someone and is no longer available.