Ah yes, FL - WK518 does indeed bring back a few memories! Glad to hear that the BBMF are still using it!
I flew some aeros in a Chippie not so long ago - the noise, smell and vibration were all still there! But no shotgun cartridge starter, being a civilianised aircraft...
However did we manage with ULAS, the AEF, Benson, Abingdon, Andover, plus numerous flying schools all quite busy - yet no Mode S..... In fact not even Mode A, a 10-channel VHF radio, no navkit...... But no-one ever had a mid-air.