Water Speedwell?

Water Speedwell?

Observation - Water Speedwell? - UK and Ireland. Description: Growing round edge of garden pond - self-introduced. Not sure if it's brooklime or water speedwell - leaves seem to me to be oval (brooklime) rather than lanceolate (water speedwell), but low creeping habit suggests the latter.

Growing round edge of garden pond - self-introduced. Not sure if it's brooklime or water speedwell - leaves seem to me to be oval (brooklime) rather than lanceolate (water speedwell), but low creeping habit suggests the latter.