Ronaldsway radar using Primary Radar (PSR) only.  No aircraft labels and no height information on  displayed aircraft.  Is the aircraft on the far right in the upper airspace and of no interest to Ronaldsway - or a Eurofighter Typhoon out of Warton at 2000 ft? Only a telephone call to another unit can tell.
 2014 ATC Pages
 
An Island Images picture © Jon Wornham