where can i buy chrome rj45 socket?

would something like this work for you?

37 pounds for a faceplate. blimey.

I'm pretty sure that faceplate is a VPSC310 from the click deco satin chrome range.

It is a modular faceplate that can take a number of connectors - see https://www.scolmore.com/_pdfs/new_media.pdf for examples

You can fit any 'euro module' into this faceplate but you will likely only get white or black.

NB - some of the links above are for 'keystone' jacks which are NOT COMPATIBLE with euromodule faceplates

If you go down the modular route, you should use white as you have the white gasket (the click deco range is available with white or black plastics and the gasket should match the insert)

this is what i mean by insert colour - https://www.click4electrics.co.uk/images/categories/DECO%20SC.jpg

and by 'gasket' i mean the bit between the faceplate and the wall - https://www.click4electrics.co.uk/click-deco-gaskets-c-328_517_903/

if you don't want to 'build your own' faceplate, they do make single or double rj45 plates. Here are some model numbers to google

vpsc118wh - twin, white inserts

vpsc118bk - twin, black inserts

VPSC117WH - single, white insert

VPSC117BK - single, black insert

vpscrj456wh - single, white inserts, with label space

vpscrj456bk - single, black inserts, with label space

Some of the supplies are quite expensive once they add shipping, look on ebay also as it is sometimes better value for these