I've seen those pillowcase sized bags - cost a packet!A weird side effect of Brexit over here (I’m in NI) is that it’s much more difficult to get Yorkshire tea unless you buy the bags that would do a catering company!
Have you tried Punjana? It's an Irish tea company, but I couldn't say if NI or Eire. It's a very good tea, but as I say, a bit pricier than Yorkshire.