I was going to use them in the new year but they've just changed the T's and C's of the agreement with my company so I can now only choose bikes they sell through their stores. Unfortunately Bromptons aren't included.
Their bike-to-work office have basically said they will not accept vouchers from third parties i.e. Pearsons,
Condor, etc. If anyone's thinking of using them via an external supplier I'd double check this isn't going to affect you.