UK copyright law doesn't differ from US law in whether facts are protected by copyright. However, a database could be protected, under section 3 of Copyright, Designs and Patents Act 1988. If it is "arranged in a systematic or methodical way" and is original, meaning "by reason of the selection or arrangement of the contents of the database the database constitutes the author’s own intellectual creation", then it can be protected. A data point would not be (e.g. "there were 12,945 requests in the last minute", "the temperature is 15º"). So it would depend on the originality of the data, at least for the question of copyright. This gives a fair amount of detail about database law in the UK.
There is also a non-copyright question regarding Google's TOS, since they may have limits on how you can access or distribute data. I assume you've studied the TOS and are confident that your program meets the technical requirements that they articulate.