Hughie Green vs the MiGs story is discussed in
this link. One of the posters there, Roger Smith, looked up an article in 'Flying Review'.
Written by C. J. Luxton who was one of the three occupants of Cessna 310 "Oscar Kilo" - HG was pilot, CJL co-pilot (operating the radio) and the third person was Jim Preston a journalist. HG was travelling to do a show for the Services.
They were flying from Stuttgart to Gatow via Frankfurt at 9,500ft cruising at 200mph. Ten minutes after entering the 20 mile wide corridor Berlin radar told them of another aircraft "approaching fast from five o'clock" - a MiG flew past/in front of them. After flying past a second time very fast the Russian pilot extended flaps and undercarraige and made signs for the Cessna to follow and land - which were ignored.
The MiG opened fire although not hitting the Cessna and a Yak-25 joined in flying across their path at supersonic speed making the Cessna rock violently, almost rolling on it's back and the left engine stopped. The two Russians repeated their manaeovres and the occupants of the Cessna agreed they would have to give in and turned right. However, informed by Berlin that they were only 27 miles away, the Cessna was turned back on course and dived to gain max speed. The MiG returned and started firing again but, fortunately, the Cessna found a little cloud cover and made it to Gatow.
The sequel was that the Russian Commander would not then grant safe passage for the aircraft on it's flight out of Berlin so the three occupants returned to London by BEA Viscount. Eventually told by the British Embassy in Bonn they could fly it out "at their own risk" they returned to Gatow by Viscount and sneaked out early one morning without using any radio and flying at low level along the shorter corridor to Hanover thence on to London.