christmas sales worst since 1981 uk retail sales fell in december  failing to meet expectations and making it by some counts the worst christmas since 1981.  retail sales dropped by 1% on the month in december  after a 0.6% rise in november  the office for national statistics (ons) said. the ons revised the annual 2004 rate of growth down from the 5.9% estimated in november to 3.2%. a number of retailers have already reported poor figures for december. clothing retailers and non-specialist stores were the worst hit with only internet retailers showing any significant growth  according to the ons.  the last time retailers endured a tougher christmas was 23 years previously  when sales plunged 1.7%.  the ons echoed an earlier caution from bank of england governor mervyn king not to read too much into the poor december figures. some analysts put a positive gloss on the figures  pointing out that the non-seasonally-adjusted figures showed a performance comparable with 2003. the november-december jump last year was roughly comparable with recent averages  although some way below the serious booms seen in the 1990s. and figures for retail volume outperformed measures of actual spending  an indication that consumers are looking for bargains  and retailers are cutting their prices.  however  reports from some high street retailers highlight the weakness of the sector. morrisons  woolworths  house of fraser  marks & spencer and big food all said that the festive period was disappointing.  and a british retail consortium survey found that christmas 2004 was the worst for 10 years. yet  other retailers - including hmv  monsoon  jessops  body shop and tesco - reported that festive sales were well up on last year. investec chief economist philip shaw said he did not expect the poor retail figures to have any immediate effect on interest rates.  the retail sales figures are very weak  but as bank of england governor mervyn king indicated last night  you don t really get an accurate impression of christmas trading until about easter   said mr shaw.  our view is the bank of england will keep its powder dry and wait to see the big picture.