I afraid I wouldn't get too excited about legal representation.
My experience of their legal department is a bit of a joke to say the least.
If there are straightforward case's then you would be OK. However, most things these days that require the needs of a good brief are normally not.
Simpson Miller are only a figure head, to dot i 's and cross t 's.
If there is ANYTHING controversial then they ALWAYS side with the company you have a grievance with or run a mile.
There is far too much internal politics within the NEC at the moment and this is clouding their judgement when it comes to actually helping the membership, who really could do with their support.
BALPA, whilst having some good points, are a bit of a Paper Tiger I'm afraid.
PM me if you want more comprehensive details.