"If offered treatment by the ENT Department........"

My advice would be to take it!

I had Endoscopic Sinus Surgery. I had the very best of attention pre-surgery, during the operation also in three post surgery reviews.

The consultant and his Team were very pleasant and so nice to deal with,

I understand they made full use of the latest equipment during the operation. In effect the Surgeon operated using a CT scan of my sinus areas with the template embedded into surgical tools so nothing was left to chance. Please excuse my layman's understanding of this but most importantly, the operation was a complete success.