There were about a quarter of a million grants of probate in 1995. Many of the company cases are dealt with in a specialist sub-Division, the Companies Court. See the Chancery Division judgments . See the Queen's Bench Division judgments . See generally The Court Service web site and the Lord Chancellor's Department which are currently under construction.
Any civil trial is in the vast majority of cases by a judge alone.
Juries are now very rare in civil cases. Another feature to note is that cases are often slow to pass through the system, measured in months or years rather than weeks as for criminal cases. This applies both to High Court and County Court. See the Court of Appeal, Civil Division judgments . Law Index by Courts is a good option as it covers a wide variety of UK courts.