DawnRazer,
Sorry you're here. 1.5T mpMRI is fine for this stage of diagnosis. Some centres are now doing this with 3T bi-parametric MRI (without contrast), which they argue is just as effective. (RBH@Reading is an example.)
There's some confusion over TP biopsies here, because there are two types.
You want what's called an LATP (Local Anesthetic Transperineal) biopsy, if the MRI indicates a biopsy is necessary. If your hospital doesn't do those, then it's behind the times. It takes same time as a TRUS, so it wouldn't have a longer waiting list, and it's most unlikely any hospital would do both procedures - LATP replaces TRUS. These are both outpatient procedures.
The TP biopsy with a waiting list will be a template biopsy which is done (usually) under general anesthetic, so it needs theatre time with a theatre team. That isn't usually necessary as a first biopsy, unless the MRI shows nothing while disease is strongly suspected and a mapping biopsy is required (a form of template biopsy), or the MRI shows disease in the anterior and the hospital only otherwise has TRUS (which can't reach the anterior).
You don't need to use your local hospital. You can ask your GP to refer you to any hospital in England, although you'll have to work out how to travel there and back. If you are choosing a distant hospital, you probably want to choose one of the main cancer centres. The Christie in Manchester is one, but I don't know if it's your nearest.