I can't remember the statutory specifics but they are under a duty to consult properly, to follow a fair selection procedure and also to try and find you alternative employment. The role also needs to be genuinely redundant of course!
They should also follow their own internal procedures - which might state something like "we will try to find you an alternative role within the organisation, redundancy is a last resort etc".
Do you have at least one year's continuous service? If not, you have no protection from Unfair Dismissal unfortunately. You would still be protected from discrimination (on the ground of age, for example) though.
There's plenty of free employment advice out there.
You could try the CAB as a starting point (although I wouldn't always take their advice as gospel). Are you a member of a union? If so they should be able to put you in touch with law firms.
I'm not going to recommend any firms by name but if you search you'll find some decent law firms who will give you free advice regarding whether you have a case.