This denomination is complely useless with more and more retailers and outlets refusing to take them.
Ive just had a lengthy FB message with the Post Office who have advised me that with all their branches accepting £50 notes is discretionary. This kind of explains why my local branch have just looked at me like I'm a Columbian drug lord when I gave them some to bank this evening. They took the £400 in twenties no problems without checking a single one but they refused to take £200 in £50 notes