This thread took me back. I think to the mid 1980's. I flew to Dubrovnik from LGW with Aviogenex on a TU-134. I remember nothing of the flight on the way out but when we returned to Gatwick, I distinctly remember some serious braking after touchdown. Felt like mechanical braking. It was so extreme that some of the passenger seats backs tipped all the way forward. I always wondered what happened there as it was quite violent. I don't recall the crew mentioning anything (at least not in English).
P.S. I still have a baggage tag with Aviogenex logo on it.