In the UK the model of supervision may differ slightly from that in the U.S.

Here, personal issues can be explored in a boundaried way relevant to supervisory work - e.g. you might look at how the ways your issues overlap with your client's and how that might impact on the work.

Additionally, in the UK, most of the main models of supervision involve paying attention to what happens in the supervisory relationship and how this might bear parallels to what is happening in the corresponding therapeutic relationship as a means of understanding the transference dynamic. (If you are interested in this, look up parallel process in supervision).

That said, it is only relevant as it relates to the client work and not at all a place to work through your own issues. Remember, supervision is in service of the client, and your feelings and responses are relevant to explore as far as that exploration will help you be a better therapist to your clients. If the transference is actively getting in the way of the work of supervision, then it is an ethical imperative to either resolve that in personal therapy or get a new supervisor (or both).