Over the years I have flown on all but two of the BAC1-11 srs 500 that BEA/British Airways operated from the original 1967 and later 1970s orders, two of Court Line and three of BCal, all of which passed to BA at the takeover.
The aircraft were all 5 abreast in coach with adequate legroom, even in Court Line charter layout.
Generally light and airy and quite quiet unless you were right by the engines.
Very much an over engineered aircraft, solid as a rock but liable to give a hard ride in turbulence.
A couple of stories.
In 1973 there was a "Manchester Festival". The BEA (which had just become BA) Engineering division had an open day. I went along and managed to blag a free 30 minute flight on one of the 10 flights on which they were giving seats away (as I was flying to/from Glasgow sometimes twice a week on the 1-11s at the time I reckoned they owed me a freebie). The aircraft was G-AVMT.
I found myself sitting next to "Miss Manchester Festival" and spent the whole ride holding her hand and generally trying to make her feel better as she made liberal use of the sick bags.
There wasn't a bit of turbulence and she admitted when we got off that she had only taken the flight because the organisers had told her she must. She said she was scared stiff from start to finish and she never wanted to see another aircraft.
Five minutes later she was telling a radio reporter how much she had enjoyed the flight and how great BA was going to be. Her "minder", who hadn't wanted the flight either and who stayed on the ground, prompted her through the interview.
In 1980 I flew from Manchester - Dusseldorf - Berlin on G-AVMZ and encountered severe clear air turbulence at 20,000ft on climb out from MAN.
The right wing appeared to bend through about 20 degrees though the aircraft didn't bank and we literally fell 2,000ft. The meal had just been served so I and many others ended up with food and drink all over us and one of the FAs hit the ceiling, fortunately having had the presence of mind to put the brake on the food trolley and she used her hands to protect her head.
The Captain was not as lucky as he had ben leaving his seat to go to the toilet, the ride up to then being smooth, and he cracked his head on the overhead switch panel.
A BAe Tornado development pilot sitting close by agreed with the flight crew that none of them had ever experienced anything as severe before. We landed at Dusseldorf and a long visual inspection took place before we flew on to Berlin and a change of clothes.