In an earlier contribution to this discussion,
wrote:

Are you talking about plans for Building Regs purposes - or do you
need them for Planning Permission as well?
I need them for both. I was expecting to get both, although the
plannings ones are easy and I could do them myself. I also want advice
about feasibility, such as "oh, if you want that big window, you'll
need to do such and such ..."
Simon.

A decent architectural technician should be able to do all that - inlcuding
the feasibility bit. The likely issues with a big window a
* adequate brickwork pillars either side
* adequate lintel to support whatever's above
* heat losses/effect on Part-L compliance

It also pays to take your draft plans and bounce them off a BCO before you
get too far. They will advise you what they're looking for - thus making it
much less likely that your final plans will get rejected when you sumit them
formally.
--
Cheers,
Set Square
______
Please reply to newsgroup. Reply address is invalid.