Tiling uneven wall

[Robnine]

Hi new to this site but any assistance anyone could give with the following problem would be much appreciated.

I have recently removed 1930's tiles in my bathroom which came up to about four feet high all round the room.

I now want to re-tile up to ceiling height but have the following problem;

Underneath the old tiles is a rough unskimmed plaster/concrete stuff, and above (the old tiles) wall has been plastered so the top half of all the wall is about 1-2mm proud of the bottom half.

Also several chunks of concrete/plaster (im not sure what it is to be honest!) have come away revealing the brickwork underneath.

Am happy to fill the missing chunks (pollyfilla?) but how do I get the wall even - should I just get a plasterer in and have him skim the bottom half of the walls?

 

[muckylugs]

if the holes are deep dont use polyfilla use bonding or something along those lines
as for the 1-2mm difference just use more tile adhesive to bed them on with

 

[Robnine]

Thanks for that Muckylugs, i'll get stuck in this weekend.

 

[bobski]

if you are not sure how to bond,just use the broken tiles,turn them round and fix them with the tile adhesive