Route: 221 - Allover the place By George

Route: 221 runs between Edgware and Turnpike Lane Station Via North Finchley operated by Arriva London North at their Wood Green Base, with a PVR of  22 and is 11 miles long, but every other bus running from Turnpike Lane terminates at North Finchley.
Currently WN have been intermixing different buses onto the route with at the moment one rare observation a day on the route, whether that may be a DW, T, *DLP or a **DLA
*= There is only one of these based at WN
**= There are only four left at WN
Two weeks ago DWs were a common sight on the route with about one on the route on: Tuesday,Wedensday,Thursday and Friday and with the annoyance of not having my camera present I used my phone so I do apologize for some poor quality so I will also include a photo taken when a DW first strayed onto the route.

221 Arriva London (WN) DW477 LJ61 CCA North Finchley
Seen on the 3rd of May 2012

221 Arriva London (WN) DW498 LJ61 CKE Friern Barnet
Seen on the 9th of April 2012 when it first appeared on the route

 Throughout this week E40Ds allocated to routes: 29 & 144 have been straying onto the route with the first ever appeared on the route with the first one appearing on the route on Thursday and a second on Friday.

221 Arriva London North (WN) T267 LJ61 LJO North Finchley
Seen on the 10th of May 2012

221 Arriva London North (WN) T272 LJ61 LHR Friern Barnet
Seen on Friday the 11th of May 2012

221 Arriva London North (WN) T272 LJ61 LHR Bounds Green
Seen on the 11th of May 2012

Not such "Rare workings on the 221 include DLAs and a DLP the reason they are mostly found on the route when WN put these buses in service:

221 Arriva London North (WN) DLA201 W401 VGJ North Finchley

221 Arriva London North (WN) DLP66 LJ51 DKY North Finchley

Thanks for reading.