You could try matching your exact model with results found here:
https://eshop.macsales.com/upgrades/
In Europe some offerings of OWC (macsales) are available in the
region; http://owcshop.eu/catalog/ including the UK; also note
https://www.megamac.com/collections/owc
Also the powerbookmedic site has parts for a variety of models:
https://www.powerbookmedic.com/find-replacement-parts/
Companies whose business is to repair & restore portable Mac
computers usually have a parts supply; some may share them
with a hobbyist. This one offers substantial repair/parts service:
http://www.wegenermedia.com/
Be certain of your build model so as to match up correct parts
and alleviate assumptions that may be based on fuzzy logic:
• Mac Serial Number lnfo - Lookup your Apple Serial Number:
https://www.powerbookmedic.com/identify-mac-serial.php
You can get a download of a database of Apple/Mac products
that's helpful, from application maker's site: http://mactracker.ca
Also note http://www.everymac.com site has much information.
So if you correctly identify the build model year & hardware spec
locating replacement parts of correct match should be easy. And
note the size of the display can play an important role where parts
and upgrades are concerned. Details: specifications do matter.
Then, there are guides to replace hardware. Some fair video are
available to use free, from OWC macsales site. • Install Videos
And the generally well-known iFixit repair guides cover Mac tasks.
https://www.ifixit.com/Guide/Browse/Mac
In any event...
Good luck & happy computing! 🙂
