Good advice. I agree that the government and local authority sites aren't very helpful. Here in Wigan it looks like there are none. Went for a drive to a metal company in Westhoughton and found two companies next to each other with there own weighbridge. Look for a decent scrap metal dealer, usually charge a tenner.Found that government website particularly unhelpful - that redirected me to the SurreyCC website, which states that there are no weighbridges in Surrey!!
We use a local builders merchant, who are happy to let us use their weighbridge, for a contribution to their charity box!! I use the mobile to take pictures of the front, rear, and combined axle weights.That gives you a dated record.