Thank you for your suggestions, I am now satisfied that the badge in question is the current MOD Issue Kings Royal Hussars metal other ranks gilt beret cap badge. Finding an exact copy online proved to be quite a task but eventually I found a site selling one.
I am quite surprised how much bigger this KRH one is compared to my old 14/20 cap badge but the website did not give dimensions to compare. From my search efforts it seems that genuine 14/20 badges are quite rare.
Anyway thanks again,