need some walls tiling above my bath-3 walls in total but only one wall totally tiled-others are just partially tiled, the area's are as below-
area 1 measures 1.8m x 1.7m-to be tiled
area 2 measures 1.8m x 70cm- to be tiled
area 3 measures 70 cm x 40cm- to be tiled
the tiles measure 20cm x 28 cm so biggish tiles

how much roughly to have it tiled if i am providing all stuff needed?

need some walls tiling above my bath-3 walls in total but only one wall totally tiled-others are just partially tiled, the area's are as below-
area 1 measures 1.8m x 1.7m-to be tiled
area 2 measures 1.8m x 70cm- to be tiled
area 3 measures 70 cm x 40cm- to be tiled
the tiles measure 20cm x 28 cm so biggish tiles

how much roughly to have it tiled if i am providing all stuff needed?

Assuming the walls are in good condition and do not require plastering, the cost would be approx £150, (typically £25-35 per m2), if you supply the tiles and the tiler supplies the adhesive, grout, etc. Most tilers have their preferences for adhesive and can buy it cheaper than you can anyway.
Cheers
Neil