You might want to try the solicitor who is acting for the relatives of those killed in the Shoreham, he is also an ex-RAF pilot. You should be able to google it.
Also check your insurance policies including home policies, in that case you might be covered for legal issues, in which case if you are insured, your insurance company will appoint a lawyer.
Remember if this matter is going to court, these days you can instruct a direct barrister, which cuts out a solicitor as a middle man, and saves money. The only is that you will need to put together the court bundles.
If you are talking to the other side consider ADR (Alternate dispute resolution) in the form of mediation or arbitration. This can but not always) protect you against a cost order if the other side does not want to attempt ADR. Just for clarication, arbitration is normally conducted by a retired judges, you would sit around a table with the other side and the arbitrator, gathers the facts/evidence and makes a ruling, which is legally binding and much less expensive. In fact Judge Rinder actually is an arbitrator in law, although the TV series like to give the impression it is a court of law, which it is not.
Finally you might try the Law Society website 'find a professiona', but I am not sure in the search facility they would list aviation negligence.
! hope this is of help.