I thought the short lived radar on the BA car park was a 23cm Marconi 654, replaced by the 23cm HSA radar on T1a car park.
We had a 50cm Marconi 232 at Farnborugh until the Watchman was installed, 1991 I think and it too made a 'beep' on the RTF every time it rotated.
I believe there was a 10 cm Plessey AR15 at Luton which wouldn't interface with other LATCC radars so it was just switched off and left there.