UK - Reenter country on a Tier 5 Visa through eGates

I am a Canadian citizen who is currently working in the UK on a Tier 5 Visa. My visa is valid until January. My total time in the UK will be about four months.
When I arrived at Heathrow, I saw a border officer and received a stamp on my Visa. Now, I plan on visiting home for Thanksgiving (October) and coming back after spending seven days in Canada.
As a Canadian citizen, I can use the eGates at Heathrow. However, I am not sure if I need to get my passport stamped again if I reenter the country during my Tier 5 visa. Would it be safe to go through the eGates, or do I absolutely have to have a stamp in my passport upon reentry?
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Can I enter the UK on a Tier 5 visa?
Tier 5 visa holders must travel to the UK as soon as possible after the start date of their Tier 5 vignette. Those issued a vignette valid for 30 days must travel to the UK within this period, as if they do not, they will have to apply, and pay, for a replacement vignette before entering the UK.How long can you stay outside the UK on Tier 5 visa?
For the Tier 5 (Creative and sporting) visa, you can stay for whichever is the shorter of i) your Certificate of Sponsorship plus 28 days or ii) 12 months.Can I leave and re-enter UK on a student visa?
With Student permission, you can leave and re-enter the UK as often as you wish before the end date of your course. On re-entering, you will need to show the Border Force Officer some evidence, so you should carry all of the following in your hand luggage: Your passport, and your BRP if you have one.Can you enter UK with biometric residence permit?
If you have a BRP and you leave the UK and want to re-enter you will need to show it at the border (along with with your passport) to confirm your immigration status. Please note the biometric residence permit is not a travel document on its own and therefore will need to be shown alongside a passport at the border.Why you must consider the UK TIER 5, CHARITY WORK VISA!!! #ukvisa #tier5
Sources: Stack Exchange - This article follows the attribution requirements of Stack Exchange and is licensed under CC BY-SA 3.0.
Images: Mike B, vectors icon, Pixabay, Bernadett Varga