As a serving police officer and having been in a similar position a few years ago I know the position your in. I have an ASBO against my next door neighbour, he made an allegation I Had accessed police systems to gain information about him which I hadn't, I was then invited to a police office , arrested and interviewed. I was released without charge. Before I left the police station officers from firearms Licencing attended and threatened to take my firearms and shotguns and offerd me the opertunity to put them into remote storage where I could access them but not store them at my own address as they feared I may shoot my neighbour. By day I was a police officer serving the public but when off duty I was considered a risk to public safety.
When I refused I was was threatened by a chief inspector of police Scotland that he would revoke my certificates, my lawyer was the one previously mentioned in this thread. He pointed out that under the firearms legislation the police could dictate where I stored my firearms but not my shotguns which are covered by separate legislation. The CI then said he would still revoke both certs if I did not agree to store both at another address. I agreed to store the firearms at my fathers but would keep the shotguns at my own address. The CI refused and said he was revoking my certs , when my lawyer told him he was acting illegally he agreed but said it could take two years to get the case into court during which time my guns would be in storage and I would have no access. I would also have to declare that I had a previous revocation when I next applied and he would be retired before that date. The lawyer advised me to agree to remote storage with 3 month reviews.
Taking his advice I agreed .
After three months there was no review, after six months there was no review , after nine months with no review I made a complaint against police Scotland and I had the guns returned within a month. I did a freedom of information request and there is none of this information recorded on my firearms certificate according to the police.
For your information the Chief Inspector who acted illegally is now employed by BASC and to be honest David McKie was afraid to go up against him. Make your own decisions and employ an independent solicitor.
In Scotland if the police have sufficient evidence they will arrest you and charge you. If they require to interview you ( normally means they need more evidence) then you will be arrested on suspicion of assault, offered access to a solicitor and interviewed . If following the interview they have sufficient evidence to charge they will. If not you will be released pending further enquiry to seek further evidence and can be subsequently arrested and charged. If you are innocent then put forward your side of events, seize any CCTV available of the incident and the details of any witnesses. The police have a duty to secure evidence to both prove and disprove any allegation ( exculpatory evidence) so they can't just take the complainers witness statements as fact they have to take your witnesses evidence as well and report all the evidence to the procurator fiscal who will make the fimpnale decision as to wether it's in the public interest to proceed to trial.
Despite my own experience I do still have faith in the police and the judicial system, it is a very stressful situation and you have my sympathy. Good luck .