Vera's sister-in-law Joyce says she wants a washing machine which costs "twenty five pounds". Until decimalization in 1971, most luxury goods (such as washing machines and men's suits) were priced in guineas not pounds. Interestingly, in the film the cost of the abortion is expressed as two guineas. (One guinea = one pound one shilling, equivalent to one pound five pence in decimal.) This was true for some outlets, particularly those wishing to appeal to the middle class or those aspiring to a degree of 'poshness'. Throughout the 1960s most domestic items were priced in £.s.d or Pounds, shillings and pence. Services and professions continued to charge in guineas as an affectation until much later.
When the young girl visits the psychiatrist, he asks her what her father does. She replies that "He works for the Ministry of Defence". However, the Ministry of Defence was not created until 1968 with the amalgamation of The War Office (Army), The Air Ministry (Royal Air Force) and The Admiralty (Royal Navy).
In the dancing scene with Sid and his friends, the music played features blaring trumpets. However, at the same time it shows the band and the only ones playing are the saxophone and trombone players. The trumpet player is just tapping his toes here. Also, the music would have to be played by a large band, not a group of a couple musicians due to the harmonies heard.