Quote 1:
"I made some inquiries about making a private appointment. Two weeks later, I paid £50 to see a consultant at a private hospital in Sheffield and was told an operation under local anaesthetic would cost £1,600.
If I wanted it under a general anaesthetic, which meant I would be asleep during the procedure, plus an overnight stay, it would cost £2,900"
Source (regrettably undated):
http://www.dailymail.co.uk/health/article-102172/Why-man-went-overseas-cataract-operation.html
Quotes 2 & 3:
"Cataract surgery in a private UK clinic can cost anywhere from £1,800-£3,000 including the doctor's and hospital fees"
and
"Prices for cataract surgery abroad start from as little as £440 in Bulgaria and £526 in the Czech Republic. These prices will usually include hospital and doctor's charges"
Source:
http://lasereyesurgery.cliniccompare.co.uk/private-cataract-surgery-clinics