Servisair isn't always the higher paid company between themselves and Menzies..varies by station and by what airlines are handled for obvious reasons
Its the same as well with Menzies to be honest. There is no set wage. Its like you said, tigger, It depends on who they handle, where they are etc etc.
Shame, as some stations are on £3.5 even £4 an hour I have heard for the same job role!