Briefly, it appears that the answer to this question is: no.
Well, according to a telephone conversation I had with a Charity Commission employee on the helpline today, a letter of pledge is now never going to be sufficient proof that a charity will receive more than £5,000 in income in its first year of operation for registration purposes.
Firstly, my apologies for the delay in the arrival of this post, but the judgement was the length of a short novel (at 116 pages), even without the inclusion of any summary of the submissions made by the parties.
The meeting of the Charity Law Association (CLA) last Thursday evening (blame DIY in a new home and a demanding kitten for the delay in the arrival of this post) was interesting for a number of reasons. Well, to me, anyway.