HELP...washer jet pipe

Right guys joined last week and said wouldn't be long before i was pestering you with questions.....
drove down from lake district to watford yesterday unfortunately it was -8 ! when i set off and my washer jets must have been frozen as it now seems the pipe has blown off the pump/bottle.

not fun stoppin on the hard shoulder of the M6 toll road to clean salt off your windscreen coz you cant see.

how do you get to the bottom of the bottle or the pump can only see the top once the plastic trim is removed.......
is it through the wheel arch ???????????