The PoW was extended and refurbished in 1984 and reopened at the end of that year under one landlord, NB, for less than a year before MH took over in August 1985. MH says he took it over from people under whom it was doing £1,500 which he improved to £8,000 - details which confirm it was a brewery-owned tenanted site and not a free house owned by its landlord. Presumably the people were NH and partner (the brewery seems to have liked couples running pubs). In 1986, therefore, the place would have been in reasonable nick 18 months after its facelift and presumably as it was being used for training it can't have been that grotty. By the mid-90s if no more was done it could have been looking quite scruffy again.
This seems to have been a thing with pubs. They were quite frequently allowed to get quite rundown before the owner either spent some money to jazz them up or they just closed (which is more normal now).
There is no suggestion that SJL was ever a patron, though. MH didn't recognise her as a regular. Given where her stuff was found, i.e. by the phone boxes outside, and that she was at her mother's until gone 9, and that she drove home, and that in doing so passed the PoW, and that she had a phone conversation with AL about 10, it would appear she lost this stuff when she stopped off to use a phone box, then drove on home.
I tend to doubt that she drove past, went home, parked, and then walked back 200 yards to use a phone box. If her flatmate was out she could just use the phone in the flat for a personal call, whereas if he's in, she has to go out again and walk to a phone box she has literally just driven past.