thats software, not the license
to the OP, you wont find one for £50, unless you would be scammed in some way. and remember, it's not £50 for life he would have to pay the full price again, next year.
Standard License: $149.99
6 months support/upgrades
30 days phone support
2 business day ticket response
5 day major version upgrade turnaround
Minor version upgrade via easy upgrade pack
One active installation + one test installation
After 6 months: $25 renewal option to access upgrades and ticket support*
* Please consult our Standards of Service document for full terms regarding IP.Board license renewals.