I have come up with this generalised postcode for both but also co-ordinates if you can pop them into your GPS? If you click on the web address you can see where they are pointing to.
RHEOLALocation: United Kingdom
Grid ref: SN850050
Postcode district: SA11 4xx (map centre)
X: 285000m
Y: 205000m
Lat: 51:43:55N (51.7319)
Lon: 3:40:00W (-3.6666)
Web Address:www.multimap.com/map/browse.cgi?lat=51.7319&lon=-3.6666&scale=25000&icon=x MTN. ASHLocation: United Kingdom
Grid ref: ST070970
Postcode district: CF45 4xx (map centre)
X: 307000m
Y: 197000m
Lat: 51:39:51N (51.6641)
Lon: 3:20:46W (-3.346)
Web Address: www.multimap.com/map/browse.cgi?lat=51.6641&lon=-3.346&scale=100000&icon=x