As Mulderpf has said, most companies only hike to adjust for inflation and if they follow the RPI correctly, its 5% at the moment.
On another note, companies that increase salary just for inflation usually have a performance linked bonus - else noone would work for a private company if they r effectively on the same salary for 20years
There are still many product, development and consulting companies that give decent pay hikes ranging from 5% to 15% so just depends which company you work for.
You may be better off asking your colleagues than posting on this forum as salary hikes are down to individual companies only
KP