City Organiser is a brilliant company/shop based in London, established in 1987. They sell lots of lovely products, including luxury handbags, pens, and of course Filofax organisers!!
I am highlighting this company because I have had nothing but positive experiences with it!
I have bought several Filofaxes from them online. Unfortunately I have never been to the shop itself, but next time I go to London I will make sure I go there! The staff was very accommodating to the Philofaxy meet-up group, opening the shop up for them on a Saturday when they are normally closed. CO owner, Andy Morse, even joined the group for lunch! Read about the meet-up here!
The reasons that City Organiser are a brilliant company is that their customer service is excellent- if you have any questions, write to them on the website or phone them- they are very helpful! Their postage is amazing, always well-packaged and arrives ridiculously quickly- order by early afternoon (I don't know the exact time) and they should dispatch it the same day, and then the parcel should arrive the next morning, even with the cheapest postage! (Or at least, the Filofaxes I've bought from them always have!) I've never had this service from Filofax UK! If you have a problem with what you've bought, like a fault (a very rare experience!), just telephone them and discuss the returns/exchange policy- again, they are very friendly and helpful! Not to mention, their prices are often a lot cheaper than the RRP!!
City Organiser are on Facebook and Twitter, and regularly hold competitions and prize draws and have discounts on their website!
Read about the history of City Organiser on this fantastic post on Philofaxy!