Help With Worcester Bosch Combi Boiler Programmer And Room Stat?

I just had a new Worcester Bosch 30CDI combi boiler installed and I need a compatible programmer and space for that stat.
  Can I use any kind of brand / model of programmer / stat, like a cheap-ish B & Q special or do I need to get a 'Worcester Bosch', would rather not as they all seem a little on the expensive side!
 There must be some way I can get a cheap programmable room stats for my bosch