I wouldn't get too exited on the values. There are 240 1ds to the £ so £10 worth = 2,400nr You could spend the rest of yor life trying to sell them on Ebay but they are only worth a few pence each. Like wise a £5 bag of 1/2ds will contain 2,400 coins the value again minimal. There will be 80 3ds in a £ bag again worth just a few pence each. You will obviously flood the market with the quantities you have (limited demand I suspect) From memory I think you will find 1967 is the most common date for all three denominations. I believe pre 1992 2p's are worth 3p in copper (a 1/2d is about the same size) so a £5 bag could be worth 2,400 x 3p = £72 in scrap. Or you could approach a dealer. The 2/6's and circulated coins are likely to be low value but if you've got the inclination get a coin book out of the library and check for any rare dates or varieties, I hope this helps.