Do not do it! I speak from experience, and have been banned for several years now from doing any business with Barclays. I was told that it was not a lifetime ban, but it’s been about four years now, and new applications are denied immediately without a credit pull.
I cycled my credit limit consistently due to significant business travel expenses. Never late, never paid a cent of interest, and no MS. All was fine for about a year, and then all accounts were closed. I appealed in many forms, but to no avail.