Andy Hall wrote:
I have a need to cut quite a number of lengths of galvanised steel
tube (about 30)

25mm ID, 33.7mm OD e.g. http://www.fhbrundle.com/tube-14.htm

A hacksaw is going to become boring for doing this quite quickly I
think so I am looking for a faster alternative.

Is this angle grinder territory? If so, can anybody suggest a suitable
cutting wheel?

Otherwise, is a more substantial saw like a cutoff saw required?

Hmmm! do you have a cross pull saw or similair?

Put a grinder wheel on it and hey presto 30 cut bars in minutes.

--
Sir Benjamin Middlethwaite