Inbound SMS can be received for a charge of £25 per month, which will give you a dedicated single word.
Telecoms already has the word OXFORD set up, which can be used along with a second word for £5 per month. E.g. texts sent to OXFORD OUTN 80125 are automatically routed to a Telecoms email address.
Inbound texts are charged at 1.5p each
It is possible to automatically send a set response to every inbound text.