You will certainly love the holiday tourism images below:
No doubt the holidaymakers were flown out on British Caledonian planes.
34 George Street is now the home of Defune Japanese Restaurant. (reads a bit like defunct!)
Africoast Holidays was also at 40/41 or 42 Conduit St.
British Caledonian Airways operated between 1970 and 1988. TOurism was still being encouraged for 1994/5 as here using Sierra Leone Airines.
More BCal ephemera on these pages on their site.