Well, that's not entirely accurate nafpnd. Yes, it counts as a co-morbidity, but there will still be a limit to how high it can be in order for a hospital to agree to an elective, non-emergency surgery. I believe the guidelines set out by the Association of Anaesthetists says 160/100. These are, however, just guidelines and will differ from hospital to hospital (possibly even from anaesthetist to anaesthetist). Your systolic reading is a possible concern, jj87 (and they do tend to care more about the systolic than the diastolic).
If it is deemed too high, you should be notified about this during the pre-op assessment. Your gp can then put you on medication to get the pressure down to a safer level. Blood pressure medication usually give quite quick results, so assuming there is a bit of time between the pre-op assessment and your actual surgery date, this can all be sorted out in that gap.
Is that reading you gave above just from one single occasion, or has it been consistently high? I was a bit concerned about my blood pressure possibly tripping my surgery up as well, but as it turns out I have "white-coat syndrome". That is, I am so uneasy around doctors and hospitals that my blood pressure automatically goes up when they measure it. So the first reading at my pre-op assessment came out far too high, and the nurse told me they were unlikely to agree to surgery until it came down. I asked her to give me 5 minutes and then measure it again. During this time I did some breathing exercises and relaxation techniques - and when she measured it again it was down at a more acceptable level.
Can you contact your team to discuss your concerns and check what they say? Don't panic - hypertension is common among bariatric patients, but it can be addressed with medication if they want you to get it down before surgery.