They will probably interview you under caution which means that they will advise you that you’re entitled to have a solicitor present. If you don’t have a solicitor you can use the duty solicitor.
You can answer no comment to everything or answer the specific questions but it’s never advisable to know comments on questions but answer others. It’s either one thing or the other.
You will be given a copy of any recording.
If it is recorded, then it is not an interview under caution.
Just answer the questions and generally, don’t volunteer anything.
I apologise for the typographical error, it should be “a civil claim” not a similar claim.
In a civil claim, the judge has to prefer one version of events more than the other whereas for a criminal claim, it has to be decided beyond all reasonable doubt.
If the witness was extremely drunk and there are other witnesses who will attest to that, then it does bring his evidence into doubt.
The court fees in a civil claim are related to the amount of the claim here: https://www.gov.uk/make-court-claim-for-money/court-fees
In a criminal case, apart from any fine or community service, there would normally be prosecution costs of a few hundred pounds.
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