ChiefPlanner
Established Member
I worked in London throughout this period, living in dodgy parts of South London at the beginning of it but mostly travelling in and out through Kings Cross and Liverpool Street.
Liverpool Street and surrounding area were transformed in the 1980s by the impact of the Financial Services Act 1986, the consequent huge amounts of property development including Broadgate, and "all day opening" for pubs in 1988. In particular the City of London was dead after 2100 on weekdays and at weekends until the pub hours changed. One lingering after effect of this was Moorgate-Finsbury Park and Cannon Street-London Bridge shutting down mid evening.
The rejuvenation of Kings Cross and surroundings only came much later, outside the date range set by the OP. Throughout the 1980s/1990s the area around Kings Cross was very dodgy. The station itself wasn't a particularly nice place to hang around in either, though in the 1980s it was still a hive of activity at night with sleeper, mail and news trains.
The Kings Cross track layout changes predate the range set by the OP, having been done in 1977 between the inner and outer suburban electrifications. The only change during the 1980s/90s was the reinstatement of platform 11.
One thing that did make a bit of a difference during this period was Thameslink opening in 1988. This made the walking route between the Thameslink station and the main station slightly less dodgy than the other streets in the area. It was probably around this time that I discovered Eddie's Chip Shop in the Grays Inn Road as an alternative to Casey Jones, which for a long while had been the only safe place to get anything to eat on late evening journeys home via Kings Cross.
The Thameslink station certainly added a lot more footfall to that a stretch twixt KX Main Line and TLK , which in some respect was an economic opportunity for some of the unregulated business transactions in the area , it took a long time for gentrification to take hold in the area. Mentioned before , but it was not a good area , and late evening it was wise to do the transfer via the Underground on foot , which was busy , well lit , CCTV'd and so on.
Drug trade was very obvious (even used to get offered in a suit !) , certain shops sold "injecting kits" , and the level of muggings and pickpocketing was high , especially if you were daft enough to use the cashpoint outside the station.
Kings Cross Thameslink was a station not fit for purpose for the numbers it dealt with , especially the northbound plat from (the busiest) , and a nightmare when things went wrong. Not missed at all.