I received an email from Wirex asking for my tax code. Has this happened to you too? What's the reason behind this request? Have they started exchanging information?
Happened to me well over a year ago when mobile app stopped me and forced me to enter some tax code digits before I could proceed and do anything further if I remember. Months later they asked for source of funds etc.
Have you been using them a lot lately? I don't know if its do do with automatic upgrade in verification level (limits) that happened after I gave them what they wanted. Or whether it is to do with CRS. Best to ask them unless someone knows.