Internet Provider Security (IPS) tags are used by domain registrar to administer a domain name registration service and related Domain Name System (DNS) services. An IPS tag is the label that applies to each registrar that registers domains in the country-code top level domain "uk" and is required to transfer domain names from one registrar to another.
IPS tags are not used by London-based websites.
At least some London-based websites will use the uk domain, as it refers to the United Kingdom, of which London is the capital. The original context did not refer to London.
( z1 use :polarity - :ARG0 ( z2 website :ARG1-of ( z3 base :location ( z4 city :name ( z5 name :op "London" ) ) ) ) :ARG1 ( z6 tag :mod ( z7 product :name ( z8 name :op "IPS" ) ) ) )