Catalans Dragons' Sam Tomkins knows Super League leaders are only intent on getting better
![Catalans Dragons' Sam Tomkins knows Super League leaders are only intent on getting better](https://i2-prod.mirror.co.uk/incoming/article30370519.ece/ALTERNATES/s615/0_Wigan-Warriors-v-Catalans-Dragons-Betfred-Super-League-Magic-Weekend-St-James-Park.jpg)
French club have strung together seven straight wins to open up a four-point lead at the top of Super League but ex-England captain insists there's more to come as they bid for maiden title