NMAC BTWN A BRITISH HAWKER HS125-800 MAKING A VISUAL APCH STRAIGHT-IN APCH FOLLOWING THE ILS; AND A C172 COMING FROM THE OPPOSITE DIRECTION AND AT THE SAME ALT. NO EVASIVE ACTION TAKEN BY EITHER ACFT.

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WE WERE BEING VECTORED FOR THE ILS TO RWY IN COATESVILLE; PA (40N). THROUGHOUT OUR DSCNT; ATC HAD US KEEPING OUR SPD UP 310 KTS; 250 FT BELOW 10000 FT. HE WAS TRYING TO GET US VISUAL; BUT WE WERE IMC AND HAD TO SHOOT THE ILS. WE WERE ESTABLISHED ON THE LOC AND GS AND 'BROKE OUT' AT ABOUT 2000 FT. HE GAVE US NO TA'S. AS WE BROKE OUT OF THE CLOUDS; WE SAW AND RECEIVED RA'S OF A C172 OPPOSITE DIRECTION AT OUR ALT. WE MISSED HIM BY 200 FT. HE WAS RIGHT AT THE BASE OF THE CLOUDS. WE HAD A LEAR BEHIND US ON THE APCH AND WERE GOING 180 KTS. WE TOLD THE CTLR ABOUT THE NMAC AND HE SAID NOTHING. THERE WAS A LONG PAUSE; THEN THE SUPVR CAME ON AND SAID 'RADAR SVC TERMINATED; CONTACT ADVISORY.' AT THIS POINT; WE WERE ABOUT 2 MI OUT. WE LANDED ON RWY. AN OPPOSITE DIRECTION LIGHT ACFT WAS ON ABOUT A 1 MI FINAL AS WE WERE SLOWING TO EXIT THE RWY. HE WENT AROUND WITH ALL THE ATC CONFUSION AND THE NMAC WE WERE RIGHT ON TOP OF THE ARPT BEFORE WE COULD CHANGE TO CTAF. NORMALLY; WE WOULD HAVE MONITORED THE FREQ 20 MI OUT; BUT OUR WORKLOAD WAS EXTREMELY HIGH. WE DIDN'T EXPECT VFR TFC IN THE WX THAT WAS PRESENT. IT WAS A VERY BAD SIT.