Thanks all. Looks like Ergon grips then. I suspect that most new flat bars are a wider diameter, than the clamp/stem on the Dawes will allow (26mm?), so choice is limited. m'fraid to say mini ao can't quite get to grips with the butterfly bar's 'weirdness' factor... Will keep them for as an option.
Hi again Andy. Something that I overlooked mentioning when it comes to the 'Lockable' grips - it might be prudent to spray the inside of the grips with a squirt or two of hair lacquer as I found out the first time that I ever used them - they sometimes have a tendency to try to rotate and if one is a bit heavy handed with the Allen Key it can easily strip the somewhat fine thread of the two components.
I often wondered why ordinary grips did not move once fitted and left overnight - the answer was that they were eased on with a lubricant that was often 'freely' available - the other halves hair lacquer.
Removal of the now tight fixed grips was carried out with a very fine longish screwdriver pushed under the grip and a squirt of WD40 -allowing it time to work its way around under the grip.
Once carried-out,the bars would be cleaned with a degreasing agent and would be ready for refitting again.