As already stated, take a run into a kwikfit and ask them to have a look but be prepared that if the tyres are still legal and the car is due to be returned soon then Motability might not authorise replacements 🤷♂️
But realistically the fact you had to brake suddenly (so harder?) on a wet road and it triggered the ABS isn’t a surprise. I wouldn’t be worried about motorway driving as you have good visibility there so should be able to anticipate any hazards… normal city roads where pedestrians, cyclists & dozy drivers are, or country roads with tractors, mud, lorries & more dozy drivers live are more to be concerned about