Linking SMS map co-ordinates to Google maps

I use a GPS tracker on my model helicopters. On request this sends Google-friendly current map co-ordinates as SMS to my phone - I could tap on the message and would drop automatically into Google maps.

Example SMS:

http://maps.google.com/maps?q=N51.315803.W0.058735

Since upgrading to IOS8 the SMS will no longer open Google Maps to display location. Any Answers - please?

Thanks