Mac, I was in the same position as you. Got me this new drill but no Centrotec stuff to put in it. So I started to look around what's available and where it's available.
I made this list for my own convenience but now that you ask for a list I might as well share it here for quick and easy reference. The prices are in euros but I thought I'd let them in for reference. You can copy and paste it to a text file on your desktop and replace the euro for UK prices.
I am in the lucky position of having Protool also here so that gives us a couple of extra choices that are preferable over Festool's choices. I don't know if you have Protool in the UK too. It is possible to order Protool from the mainland though.
I put the most basic necessities on top.
Festool
Magnet bit holder BH 60 492539 11,42 EUR
Lockable bit holder BHS 65 CE 492648 28,44 EUR
Extra long magnet bit holder BV 150 CE 492540 22,37 EUR
Wood drill case BKS D 3-8 CE/W 493648 46,29 EUR
Wood drill bit 10mm D 10 CE/W 492518 14,28 EUR
Wood drill bit 3mm D 3 CE/W 492512 8,93 EUR
Countersink QLS D5-15 CE 492521 34,63 EUR
Metal Drill case HSS D3-10 CE/10 495128 93,53 EUR
Hook driver HD D18 CE 492526 10,59 EUR
Countersink with depth setting BSTA HS D3,5 CE 492523 53,07 EUR
Center drill ZB HS D5 EURO CE 492525 54,15 EUR
Protool
Bits In-SYS Bits + BHS 65 CE 19x 637575 34,51 Eur
Drill bits In-SYS DB WOOD CE SET D4-10 5x 637574 47,60 Eur
Drill bits In-SYS DB STONE CE SET D4-10 5x 637573 44,51 Eur
The Bits In-SYS Bits + BHS 65 CE 19x by Protool is great value over buying the BHS 65 separately since it comes with a lot of bits and a nice tray that will fit in a compartment of the Sys 2 Attic model. The Protool wood drills are also better value than those of Festool because they come, again, with a nice tray while Festool's comes in a flimsy box, and they have the 10mm drill instead of the 3mm drill in Festool. All you have to buy now is the 3mm drill separately, which is a lot cheaper than the 10mm drill.
And then there's the 5 piece stone drill set, which Festool unfortunately doesn't even sell.
Oh and before I forget: I
heavily prefer Wera diamond bits over those by Festool. I don't like Festool's bits at all, they slip constantly.