When a tank is installed if it is a "Roll Over" from a previous supplier it is free of charge as long as the tank is being sited in the same location.
If it was a new install there would be a charge of around £350 -£500 depending on site conditions etc.
All the pipe work in the ground would be the reasonablilty of yourselve to put in and maintain. We can provide the pipe FOC for this job.