Dating woven formation patches

[2032eric]

Hello All,

I would like to have some information on how one could date British woven formation badges? More precisely how to assess if the cloth insignia could have been worn in WWII?

I am a US Army WWII patches collector and on this field, the embrodery and the back of the badges are of great help. I guess that it should be the same with British ones.

I attache below multiple pictures of insignia I found on the net. Which ones are WWII period ones?

If there is any link on this forum where it has been already answered, I would be very grateful if someone could indicate it

Regards
Eric