We are using OpenLayers for our GIS Application and we have base files from Ordinance Survey for UK maps.
For creating WMS layers, we are generating tiles of 256 x 256 through Sharpmap Library but facing issues when the base layer is Google or Bing.
We know Google uses EPSG:900913 projection and we are able to transform the projection from EPSG:900913 to OSGB36 successfully. For this we are using GeoTools.js methods to achieve the transformation.
But the issue is that the tiles being created are not projected properly. There is a slight misalignment at the connecting point of each tile with other tile.