A bit late in the day, but with regards to pub closures in the Wilbrahams -
Gt Wilbraham: Tally Ho 1956, White Swan 1957, Kings Head 1972
Lt Wilbraham: Gate 1935, Greyhound 1969.
If licensing registers for the area survive they are in Cambs CRO as are Quarter Session records for earlier periods, but from memory, I think survival is patchy.
If any brewery records survived then Kings Head & White Swan would have been with the Whitbread Archives and copies should now be in Cambs CRO. Tally Ho was Greene King, good luck, although their attitude to researchers may have improved. Greyhound was Watneys, if there was anything it could be in either Norwich or Cambridge CROs. Gate was Star Brewery/Tolly, doubt if anything has survived but there might be something in Ipswich or Cambridge CROs
Robert