If you access either of the ITV1 regions Central E or Central S via your Sky boxes other channels, or directly on “generic” recievers, then you may be experienceing the “no signal” messages.

This is beacase these two ITV1 regions changed frequencies this afternoon.

They have moved to frequency 11053 h 22 5/6

So you will have to go to Services, add channels, and scan the frequency and press yellow and select to add them, using the new frequency, to your other channels

This is on a different beam to their previous frequencies, so reception on smaller dishes may not be like they used to be.

However, these channels are now free to air, and no longer require a sky card to view them