Thanks for the info. Think i might invest into some of the
Hoffmann Extra Large Straight Nippers hopfully they be long enough to cut a complete 2cmx2cm glass tile.
Can anyone tell me what adhevise i should be using for the glass tile as i tried to put a strip up and the tile adhesive just went through the mesh and into the grout lines

Took it off straight away and washed the adhesive off

Luckily the tiles still remained on the mesh - so the glue used isn't water soluable.
Since my normal wall tiles are about 7mm thick and my glass tiles are 3mm i but some long strips of hardboard onto the wall to make up the difference. But have noticed that in some areas on the wall the padding is still not enough - is this because i'm using bumpy wall tiles?