URGENT: We have been trying to contact you regards your recent accident; you could be due up to £5,100 in compensation. Reply CLAIM for info, STOP to opt out.
In this case, the sender's number is +447788313443 but this will change as the networks block it.
If you get one of these, you should forward the spam and the sender's number to your carrier. In the came of T-Mobile, O2 and Orange the number to report to is 7726 ("SPAM"). Vodafone customers should use 87726 ("VSPAM") and Three customers should use 37726 ("3SPAM"). Hopefully the carriers will act if there are enough complaints.