# If you'd like to omit non-matching lines from the result; add ';d' to the end of the expression.
sed -E 's/^\(?\\?\"(\d{1,3}[-]?\d{0,3})[\s|,|,\s]?(.*[A-Za-z])\\?\",?(\d{1,2}?.?\d{3,9})?,?([-|+|\s]\d{1,2}?.?\d{3,9})?[A-Za-z]?\)?/$1 $2 [$3] [$4]/gm;t' <<< "(\"197 STATION ROAD, KINGS HEATH, BIRMINGHAM B14 7TB\",52.434992,-1.8990985)
(\\"9-12, BOW STREET, LONDON, WC2E 7AH\\",51.5136001,-0.1229336)
(\\"14 STATION ROAD, LONDON SE20 7BQ\\",51.41886,-0.0545021)
\\"14 Station road London SE20 7BQ UK\\"
\"14 Station road London SE20 7BQ UK\"
"
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for SED, please visit: https://www.gnu.org/software/sed/manual/html_node/The-_0022s_0022-Command.html