Go onto Bing maps, put in the postcode of your distination and on the side panel that opens up, click 'directions to here' Put in your postcode and click the bus/train icon and it should tell you the bus number.
thanks 237 done all that - clicked onto public transport but it gave me a time of sorta leaving right away 15.15 - so clicked onto tomorrow but couldn't find an earlier time. what should I look for - ta again