It would not be immigration that would have a warrant. It would be the police.
there is only really one way to find that out though and that is to call the police station in advance that you think may have a warrant and ask.
They may not tell you over the phone. They will usually tell a firm of solicitors that they know. If you have any links with a firm of solicitors you could get them to do that for you.
Or you could put in a SAR but that is slow and doesn't always work.
Can I clarify anything for you?
I do not have links with any solicitors, would it be the Pole/ Bournemouth Police as the driver was convicted at Bournemouth crown court
Then your only option is to try yourself.
Just explain to them that you will negotiate an appointment to surrender voluntarily if there is a warrant. Obviously only if you intend to surrender.