Recommended sites for buying on line

overclockers
i can highly recommend this site for all pc stuff,maybe not the cheapest on the net,but only a couple of £'s difference. and it's all the latest revison gear (not job lots of old gear sold on the cheap like ebuyer and pcworld)
fast delivery and far more importantly if the product developes a fault,you get immediate responce, my last rma i had the item replaced in 4 days (not like ebuyer who took 1 month on average and 3 months on the last one)

http://www.overclockers.co.uk/

crucial
excellent site that you can trust with next day free delivery for your memory. they also sell other items

http://www.crucial.com/uk/

PDAs, Mobiles & Wireless Networking
i used this site to get a sync cable for my axim pocket pc, good price and with postage was still cheaper than watford electronics down the road from me. recieved it the next morning

http://www.expansys.com/

batteries
i've used this site for watch and phone batteries,postage is very cheap (even free if you spend over £15) next day delivery
www.watchbattery.co.uk

another site worth looking at
after helping someone decide which monitor and where to buy from, this site came out £14 cheaper inc then aria, i then spent some time looking over different products,they do seem to have a different range,maybe something your looking for

http://www.misco.co.uk/