ESP fault!

Hi, I'm a proud owner of a 2007 s3. About 6 months ago the ESP fault warning came up when the ignition is switched on. This hasn't altered the way the car drives and I've been made aware that it's the ABS pump control modulator (This is now on order). My main concern is that it is booked in for an mot, which is before the module will turn up. Do any UK forum users know if the dash warning affects the mot test?