Ka, as Brian says, Ilford Hypam, without hardener works fine.

I am currently using Photographer's Formulary TF4 alkaline, non-hardening fixer and that works fine also (but it has a fairly strong ammonia odor).

I use Ilford's recommended "minimum amount of water" washing procedure after fixing. The instructions are included with the Ilford fixer and are also on the Ilford web site.