Situated at the end of Vicarage Drive on the West side of Ambleside, St Mary's is a very imposing church.....visible from all the high points of the village. Built by Sir Giles Gilbert Scott between 1850 and 1854, it is a good representation of the 'Early Decorated' style of architecture. Sir Giles' Wikipedia page has a good list of all the buildings he was responsible for.
St Mary's is one of the few Lake District churches to have a spire. It is not listed as such, but has a B status, meaning that it is important locally and should be protected as far as possible.
Unfortunately on the day I visited it was being worked on, both externally and internally, so I was unable to collect any photos of the interior. Visit Cumbria has a good page on the church, including some photos of the interior.
Check the link for further information on this church, and Holy Trinity at Brathay, and Ambleside Parish Centre.