I'd say the duration that has passed, and the appointment of mid July is a tad farcical, but that would be an understatement if it is indeed bad news.

Call them up and ask for a sooner appointment. I find it hard to believe they don't have all the results at hand. I get the NHS are busy, but even by recent standards that is poor. Yeah, call them and explain to them, that due to the wording, you deserve a sooner appointment.

All that aside, and something stated a lot on here, some of these letters are worded very poorly, with little or no concern for those receiving them, and they turn out to be nothing, but poorly worded correspondence. So don't go having yourself dead and buried before you have the facts. If it does turn out to be nothing major, I would highlight their choice of words. Might seem irrelevant to those typing or dictating these letters, but their misplaced words can have a huge impact on folks health.

I once received a letter after having heart scans, ecg and chest scans that stated no evidence of heart defect, evidence of emphysema, and no other concerns noted. Now, re read the sentence i just typed. The part that stands out is "evidence of emphysema". No "no" attached to it. I took that as I had irreversible lung damage. Turns out it was an unfortunate placement of a comma. Just a simple thing as one comma can change your perception. They apologised for that. I worried for weeks about that until my gp pointed out the error.

One last thing, your gp will know if it's bad news. Get an appointment with your gp. Imo, don't sit and sweat until mid July over something that is probably nothing.