July 30 (Reuters) - Inchcape Plc INCH.L
* H1 revenue 3.4 billion stg
* Interim dividend up 7.9 percent to 6.8 penceper share
* Solid underlying operating profit growth of 5.6% - up to
£159.2m
* Continue to expect group to deliver a robust underlying
constant currency performance in 2015
* New £100m share buyback announced
Further company coverage: INCH.L
(Editing by Neil Maidment)